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Area code 815 serves the state of Illinois. This area code was assigned on January 1st, 1947. On January 1st, 1947 it went into service. 815 is a General Purpose Code. 815 service area does overlap with 779 area codes. Dialing pattern for local calls within the same NPA (area code) is 1+10D.
| NPA | NXX | City | Usage | Company Name | NXX Introduced Date |
|---|---|---|---|---|---|
| 815 | 200 | La Salle | Landline | Paetec Communications, Inc. - Il | 06/20/2006 |
| 815 | 201 | Rockford | Wireless | Bandwidth.com Clec, Llc - Il | 08/15/2012 |
| 815 | 201 | Rockford | Wireless | Bandwidth.com Clec, Llc - Il | 08/15/2012 |
| 815 | 201 | Rockford | Wireless | Bandwidth.com Clec, Llc - Il | 08/15/2012 |
| 815 | 202 | Oglesby | Wireless | New Cingular Wireless Pcs, Llc - Il | 04/08/2008 |
| 815 | 203 | Joliet | Wireless | Usa Mobility Wireless, Inc. | 01/25/1998 |
| 815 | 203 | Joliet | Wireless | Usa Mobility Wireless, Inc. | 01/25/1998 |
| 815 | 203 | Joliet | Wireless | Usa Mobility Wireless, Inc. | 01/25/1998 |
| 815 | 204 | Crystal Lake | Wireless | Usa Mobility Wireless, Inc. | 01/25/1998 |
| 815 | 204 | Crystal Lake | Wireless | Usa Mobility Wireless, Inc. | 01/25/1998 |
| 815 | 205 | La Grange Park | Wireless | Centurylink Communications Llc | 01/31/2014 |
| 815 | 205 | Brookfield | Wireless | Centurylink Communications Llc | 01/31/2014 |
| 815 | 205 | Western Springs | Wireless | Centurylink Communications Llc | 01/31/2014 |
| 815 | 206 | Woodstock | Landline | Ameritech Illinois | 08/20/2000 |
| 815 | 207 | Joliet | Landline | At&t Local | 08/14/1998 |
| 815 | 207 | Joliet | Landline | At&t Local | 08/14/1998 |
| 815 | 207 | Joliet | Landline | At&t Local | 08/14/1998 |
| 815 | 208 | Fulton | Landline | Mediacom Telephony Of Illinois, Llc - Il | 06/01/2006 |
| 815 | 209 | Rockford | Landline | Level 3 Communications, Llc - Il | 02/04/2002 |
| 815 | 209 | Rockford | Landline | Level 3 Communications, Llc - Il | 02/04/2002 |
| 815 | 209 | Rockford | Landline | Level 3 Communications, Llc - Il | 02/04/2002 |
| 815 | 210 | Joliet | Wireless | New Cingular Wireless Pcs, Llc - Il | 08/20/2000 |
| 815 | 210 | Joliet | Wireless | New Cingular Wireless Pcs, Llc - Il | 08/20/2000 |
| 815 | 210 | Joliet | Wireless | New Cingular Wireless Pcs, Llc - Il | 08/20/2000 |
| 815 | 212 | Joliet | Landline | T-mobile Usa, Inc. | 08/14/1998 |
| 815 | 212 | Joliet | Landline | T-mobile Usa, Inc. | 08/14/1998 |
| 815 | 212 | Joliet | Landline | T-mobile Usa, Inc. | 08/14/1998 |
| 815 | 213 | Sterling | Wireless | United States Cellular Corp. - Illinois | 09/29/2004 |
| 815 | 214 | Kankakee | Landline | Rcn Telecom Services Of Illinois, Inc. - Il | 05/10/1999 |
| 815 | 215 | New Lenox | Landline | First Communications Llc - Il | 02/04/2002 |
| 815 | 216 | Kankakee | Wireless | Cellco Partnership Dba Verizon Wireless - Il | 10/31/2000 |
| 815 | 216 | Bourbonnais | Wireless | Cellco Partnership Dba Verizon Wireless - Il | 10/31/2000 |
| 815 | 216 | Bradley | Wireless | Cellco Partnership Dba Verizon Wireless - Il | 10/31/2000 |
| 815 | 217 | Dekalb | Landline | Digital Network Access Communications, Inc. - Il | 02/16/2006 |
| 815 | 218 | Rockford | Wireless | Cellco Partnership Dba Verizon Wireless - Il | 01/25/1998 |
| 815 | 218 | Rockford | Wireless | Cellco Partnership Dba Verizon Wireless - Il | 01/25/1998 |
| 815 | 218 | Rockford | Wireless | Cellco Partnership Dba Verizon Wireless - Il | 01/25/1998 |
| 815 | 219 | Crystal Lake | Wireless | Sprint Spectrum L.p. | 06/06/2006 |
| 815 | 219 | Crystal Lake | Wireless | Sprint Spectrum L.p. | 06/06/2006 |
| 815 | 220 | La Salle | Landline | Ameritech Illinois | 10/13/1999 |
| 815 | 221 | Lockport | Landline | Teleport Communications America, Llc - Il | 10/15/1996 |
| 815 | 221 | Romeoville | Landline | Teleport Communications America, Llc - Il | 10/15/1996 |
| 815 | 222 | Rockford | Wireless | Cellco Partnership Dba Verizon Wireless - Il | 01/25/1998 |
| 815 | 222 | Rockford | Wireless | Cellco Partnership Dba Verizon Wireless - Il | 01/25/1998 |
| 815 | 222 | Rockford | Wireless | Cellco Partnership Dba Verizon Wireless - Il | 01/25/1998 |
| 815 | 223 | La Salle | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 224 | La Salle | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 225 | Milledgeville | Landline | Citizens Telecom Co Illinois-frontier Citizens -il | 02/04/1994 |
| 815 | 226 | Rockford | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 226 | Rockford | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 226 | Rockford | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 227 | Rockford | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 227 | Rockford | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 227 | Rockford | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 228 | Oglesby | Wireless | New Cingular Wireless Pcs, Llc - Il | 02/04/1994 |
| 815 | 229 | Rockford | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 229 | Rockford | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 229 | Rockford | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 230 | Plainfield | Landline | Broadwing Communications, Llc - Il | 10/13/1999 |
| 815 | 231 | Rockford | Landline | Ameritech Illinois | 09/11/1994 |
| 815 | 231 | Rockford | Landline | Ameritech Illinois | 09/11/1994 |
| 815 | 231 | Rockford | Landline | Ameritech Illinois | 09/11/1994 |
| 815 | 232 | Freeport | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 233 | Freeport | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 234 | Byron | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 235 | Freeport | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 236 | Woodstock | Wireless | New Cingular Wireless Pcs, Llc - Il | 02/04/1994 |
| 815 | 237 | Gardner | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 238 | Freeport | Wireless | Cellco Partnership Dba Verizon Wireless - Il | 02/04/1994 |
| 815 | 239 | Pecatonica | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 240 | Rockford | Landline | Charter Fiberlink - Illinois, Llc - Il | 10/18/2010 |
| 815 | 240 | Rockford | Landline | Charter Fiberlink - Illinois, Llc - Il | 10/18/2010 |
| 815 | 240 | Rockford | Landline | Charter Fiberlink - Illinois, Llc - Il | 10/18/2010 |
| 815 | 241 | Glenview | Wireless | American Messaging Services, Llc | 04/15/1996 |
| 815 | 241 | Northbrook | Wireless | American Messaging Services, Llc | 04/15/1996 |
| 815 | 241 | Deerfield | Wireless | American Messaging Services, Llc | 04/15/1996 |
| 815 | 242 | Rockford | Wireless | Bandwidth.com Clec, Llc - Il | 05/02/2014 |
| 815 | 242 | Rockford | Wireless | Bandwidth.com Clec, Llc - Il | 05/02/2014 |
| 815 | 242 | Rockford | Wireless | Bandwidth.com Clec, Llc - Il | 05/02/2014 |
| 815 | 243 | Rockford | Wireless | United States Cellular Corp. - Illinois | 10/15/1996 |
| 815 | 243 | Rockford | Wireless | United States Cellular Corp. - Illinois | 10/15/1996 |
| 815 | 243 | Rockford | Wireless | United States Cellular Corp. - Illinois | 10/15/1996 |
| 815 | 244 | Mount Carroll | Landline | Gallatin River Communications Dba Centurylink | 02/04/1994 |
| 815 | 245 | Woodstock | Wireless | New Cingular Wireless Pcs, Llc - Il | 02/04/1994 |
| 815 | 246 | Earlville | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 247 | Pecatonica | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 247 | German Valley | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 247 | Leaf River | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 248 | Durand | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 249 | Grand Ridge | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 250 | La Salle | Landline | Comcast Phone Of Illinois, Llc Dba Comco - Il | 08/25/2006 |
| 815 | 251 | Dixon | Landline | Gallatin River Communications Dba Centurylink | 02/04/1994 |
| 815 | 251 | Sterling | Landline | Gallatin River Communications Dba Centurylink | 02/04/1994 |
| 815 | 251 | Rock Falls | Landline | Gallatin River Communications Dba Centurylink | 02/04/1994 |
| 815 | 252 | Oglesby | Wireless | New Cingular Wireless Pcs, Llc - Il | 02/04/1994 |
| 815 | 253 | Kempton | Landline | Frontier Communications Of Illinois, Inc. | 02/04/1994 |
| 815 | 254 | Plainfield | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 255 | Minooka | Landline | Us Xchange Of Illinois Llc Dba Choice One Comm Il | 11/03/2009 |
| 815 | 256 | Cabery | Landline | Stelle Telephone Co. | 02/04/1994 |
| 815 | 257 | Streator | Wireless | Illinois Valley Cellular Rsa 2-ii Partnership | 02/04/1994 |
| 815 | 258 | Joliet | Wireless | New Cingular Wireless Pcs, Llc - Il | 02/04/1994 |
| 815 | 258 | Joliet | Wireless | New Cingular Wireless Pcs, Llc - Il | 02/04/1994 |
| 815 | 258 | Joliet | Wireless | New Cingular Wireless Pcs, Llc - Il | 02/04/1994 |
| 815 | 259 | Thomson | Landline | Gallatin River Communications Dba Centurylink | 02/04/1994 |
| 815 | 260 | Joliet | Wireless | Sprint Spectrum L.p. | 01/11/1997 |
| 815 | 260 | Joliet | Wireless | Sprint Spectrum L.p. | 01/11/1997 |
| 815 | 260 | Joliet | Wireless | Sprint Spectrum L.p. | 01/11/1997 |
| 815 | 261 | Crystal Lake | Landline | Mci Worldcom Communications, Inc. - Il | 01/11/1997 |
| 815 | 261 | Crystal Lake | Landline | Mci Worldcom Communications, Inc. - Il | 01/11/1997 |
| 815 | 262 | Rockford | Wireless | Cellco Partnership Dba Verizon Wireless - Il | 02/04/1994 |
| 815 | 262 | Rockford | Wireless | Cellco Partnership Dba Verizon Wireless - Il | 02/04/1994 |
| 815 | 262 | Rockford | Wireless | Cellco Partnership Dba Verizon Wireless - Il | 02/04/1994 |
| 815 | 263 | Kankakee | Wireless | Cellco Partnership Dba Verizon Wireless - Il | 07/01/1996 |
| 815 | 263 | Bourbonnais | Wireless | Cellco Partnership Dba Verizon Wireless - Il | 07/01/1996 |
| 815 | 263 | Bradley | Wireless | Cellco Partnership Dba Verizon Wireless - Il | 07/01/1996 |
| 815 | 264 | Waterman | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 265 | Gilman | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 266 | Freeport | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 267 | Plainfield | Landline | Mci Worldcom Communications, Inc. - Il | 01/11/1997 |
| 815 | 268 | Onarga | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 269 | Danforth | Landline | Frontier Communications Of The Carolinas, Inc - Il | 02/04/1994 |
| 815 | 270 | Lanark | Landline | Charter Fiberlink - Illinois, Llc - Il | 04/24/2007 |
| 815 | 271 | Mchenry | Landline | Mci Worldcom Communications, Inc. - Il | 04/01/1997 |
| 815 | 272 | Joliet | Landline | Mci Worldcom Communications, Inc. - Il | 01/11/1997 |
| 815 | 272 | Joliet | Landline | Mci Worldcom Communications, Inc. - Il | 01/11/1997 |
| 815 | 272 | Joliet | Landline | Mci Worldcom Communications, Inc. - Il | 01/11/1997 |
| 815 | 273 | Savanna | Landline | Gallatin River Communications Dba Centurylink | 02/04/1994 |
| 815 | 274 | Joliet | Wireless | New Cingular Wireless Pcs, Llc - Il | 01/11/1997 |
| 815 | 274 | Joliet | Wireless | New Cingular Wireless Pcs, Llc - Il | 01/11/1997 |
| 815 | 274 | Joliet | Wireless | New Cingular Wireless Pcs, Llc - Il | 01/11/1997 |
| 815 | 275 | Freeport | Wireless | Cellco Partnership Dba Verizon Wireless - Il | 02/04/1994 |
| 815 | 276 | Crystal Lake | Landline | Teleport Communications America, Llc - Il | 04/01/1997 |
| 815 | 276 | Crystal Lake | Landline | Teleport Communications America, Llc - Il | 04/01/1997 |
| 815 | 277 | Frankfort | Landline | Teleport Communications America, Llc - Il | 04/01/1997 |
| 815 | 278 | Kankakee | Wireless | Cellco Partnership Dba Verizon Wireless - Il | 10/15/1996 |
| 815 | 278 | Bourbonnais | Wireless | Cellco Partnership Dba Verizon Wireless - Il | 10/15/1996 |
| 815 | 278 | Bradley | Wireless | Cellco Partnership Dba Verizon Wireless - Il | 10/15/1996 |
| 815 | 279 | Kankakee | Wireless | American Messaging Services, Llc | 01/11/1997 |
| 815 | 279 | Bourbonnais | Wireless | American Messaging Services, Llc | 01/11/1997 |
| 815 | 279 | Bradley | Wireless | American Messaging Services, Llc | 01/11/1997 |
| 815 | 280 | Joliet | Landline | Teleport Communications America, Llc - Il | 04/01/1997 |
| 815 | 280 | Joliet | Landline | Teleport Communications America, Llc - Il | 04/01/1997 |
| 815 | 280 | Joliet | Landline | Teleport Communications America, Llc - Il | 04/01/1997 |
| 815 | 281 | Galena | Wireless | United States Cellular Corp. - Illinois | 06/15/2004 |
| 815 | 282 | Loves Park | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 283 | Dekalb | Landline | Mediacom Telephony Of Illinois, Llc - Il | 03/05/2010 |
| 815 | 284 | Dixon | Landline | Gallatin River Communications Dba Centurylink | 02/04/1994 |
| 815 | 285 | Dixon | Landline | Gallatin River Communications Dba Centurylink | 02/04/1994 |
| 815 | 286 | Hinckley | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 287 | Verona | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 288 | Dixon | Landline | Gallatin River Communications Dba Centurylink | 02/04/1994 |
| 815 | 289 | Rockford | Wireless | United States Cellular Corp. - Illinois | 07/06/1997 |
| 815 | 289 | Rockford | Wireless | United States Cellular Corp. - Illinois | 07/06/1997 |
| 815 | 289 | Rockford | Wireless | United States Cellular Corp. - Illinois | 07/06/1997 |
| 815 | 290 | Minooka | Landline | At&t Corp. | 02/10/2006 |
| 815 | 291 | Freeport | Wireless | United States Cellular Corp. - Illinois | 01/14/2000 |
| 815 | 292 | Poplar Grove | Landline | Bergen Telephone Co. - Illinois | 01/10/1996 |
| 815 | 292 | South Beloit | Landline | Bergen Telephone Co. - Illinois | 01/10/1996 |
| 815 | 292 | Roscoe | Landline | Bergen Telephone Co. - Illinois | 01/10/1996 |
| 815 | 293 | Lockport | Landline | Ameritech Illinois | 10/15/1996 |
| 815 | 293 | Romeoville | Landline | Ameritech Illinois | 10/15/1996 |
| 815 | 294 | La Grange Park | Wireless | Usa Mobility Wireless, Inc. | 01/10/1996 |
| 815 | 294 | Brookfield | Wireless | Usa Mobility Wireless, Inc. | 01/10/1996 |
| 815 | 294 | Western Springs | Wireless | Usa Mobility Wireless, Inc. | 01/10/1996 |
| 815 | 295 | Kankakee | Landline | T-mobile Usa, Inc. | 07/06/1997 |
| 815 | 296 | Rockford | Wireless | Usa Mobility Wireless, Inc. | 07/06/1997 |
| 815 | 296 | Rockford | Wireless | Usa Mobility Wireless, Inc. | 07/06/1997 |
| 815 | 296 | Rockford | Wireless | Usa Mobility Wireless, Inc. | 07/06/1997 |
| 815 | 297 | Freeport | Landline | Frontier North, Inc. - Il | 10/11/1997 |
| 815 | 298 | Rockford | Wireless | Cellco Partnership Dba Verizon Wireless - Il | 07/06/1997 |
| 815 | 298 | Rockford | Wireless | Cellco Partnership Dba Verizon Wireless - Il | 07/06/1997 |
| 815 | 298 | Rockford | Wireless | Cellco Partnership Dba Verizon Wireless - Il | 07/06/1997 |
| 815 | 299 | Rockford | Wireless | United States Cellular Corp. - Illinois | 07/04/1995 |
| 815 | 299 | Rockford | Wireless | United States Cellular Corp. - Illinois | 07/04/1995 |
| 815 | 299 | Rockford | Wireless | United States Cellular Corp. - Illinois | 07/04/1995 |
| 815 | 300 | Chicago | Landline | Ameritech Illinois | 12/22/2010 |
| 815 | 300 | Chicago | Landline | Ameritech Illinois | 12/22/2010 |
| 815 | 300 | Chicago | Landline | Ameritech Illinois | 12/22/2010 |
| 815 | 301 | Crystal Lake | Landline | Broadwing Communications, Llc - Il | 10/31/2000 |
| 815 | 301 | Crystal Lake | Landline | Broadwing Communications, Llc - Il | 10/31/2000 |
| 815 | 302 | Joliet | Wireless | Sprint Spectrum L.p. | 10/31/2000 |
| 815 | 302 | Joliet | Wireless | Sprint Spectrum L.p. | 10/31/2000 |
| 815 | 302 | Joliet | Wireless | Sprint Spectrum L.p. | 10/31/2000 |
| 815 | 303 | Princeton | Wireless | Illinois Valley Cellular Rsa 2-i Partnership | 08/20/2000 |
| 815 | 304 | Kankakee | Landline | Broadwing Communications, Llc - Il | 10/31/2000 |
| 815 | 305 | Gardner | Landline | Broadwing Communications, Llc - Il | 10/31/2000 |
| 815 | 306 | Lockport | Landline | Broadwing Communications, Llc - Il | 10/31/2000 |
| 815 | 306 | Romeoville | Landline | Broadwing Communications, Llc - Il | 10/31/2000 |
| 815 | 307 | Mchenry | Landline | Broadwing Communications, Llc - Il | 10/31/2000 |
| 815 | 308 | Woodstock | Landline | Broadwing Communications, Llc - Il | 10/31/2000 |
| 815 | 309 | Shannon | Landline | Aero North Communications, Inc. - Il | 07/18/2006 |
| 815 | 310 | Utica | Landline | Broadwing Communications, Llc - Il | 10/31/2000 |
| 815 | 312 | Rockford | Landline | Ymax Communications Corp. - Il | 12/15/2008 |
| 815 | 312 | Rockford | Landline | Ymax Communications Corp. - Il | 12/15/2008 |
| 815 | 312 | Rockford | Landline | Ymax Communications Corp. - Il | 12/15/2008 |
| 815 | 313 | Ottawa | Landline | Broadwing Communications, Llc - Il | 10/31/2000 |
| 815 | 314 | Manhattan | Landline | Broadwing Communications, Llc - Il | 10/31/2000 |
| 815 | 315 | Rockford | Landline | Level 3 Communications, Llc - Il | 10/31/2000 |
| 815 | 315 | Rockford | Landline | Level 3 Communications, Llc - Il | 10/31/2000 |
| 815 | 315 | Rockford | Landline | Level 3 Communications, Llc - Il | 10/31/2000 |
| 815 | 316 | Rockford | Landline | Tds Metrocom Inc.-il | 10/31/2000 |
| 815 | 316 | Rockford | Landline | Tds Metrocom Inc.-il | 10/31/2000 |
| 815 | 316 | Rockford | Landline | Tds Metrocom Inc.-il | 10/31/2000 |
| 815 | 317 | Crescent City | Landline | Broadwing Communications, Llc - Il | 10/31/2000 |
| 815 | 318 | Morris | Landline | Broadwing Communications, Llc - Il | 10/31/2000 |
| 815 | 319 | Rockford | Wireless | United States Cellular Corp. - Illinois | 06/13/2000 |
| 815 | 319 | Rockford | Wireless | United States Cellular Corp. - Illinois | 06/13/2000 |
| 815 | 319 | Rockford | Wireless | United States Cellular Corp. - Illinois | 06/13/2000 |
| 815 | 320 | Kankakee | Wireless | Peerless Network Of Illinois, Llc - Il | 04/28/2009 |
| 815 | 320 | Bourbonnais | Wireless | Peerless Network Of Illinois, Llc - Il | 04/28/2009 |
| 815 | 320 | Bradley | Wireless | Peerless Network Of Illinois, Llc - Il | 04/28/2009 |
| 815 | 321 | Woodstock | Landline | Xo Illinois, Inc. | 01/11/1997 |
| 815 | 322 | Mchenry | Landline | Level 3 Communications, Llc - Il | 01/11/1997 |
| 815 | 323 | Belvidere | Landline | Level 3 Communications, Llc - Il | 02/10/2005 |
| 815 | 324 | Ottawa | Landline | Mediacom Telephony Of Illinois, Llc - Il | 01/08/2010 |
| 815 | 325 | Joliet | Wireless | New Cingular Wireless Pcs, Llc - Il | 07/06/1997 |
| 815 | 325 | Joliet | Wireless | New Cingular Wireless Pcs, Llc - Il | 07/06/1997 |
| 815 | 325 | Joliet | Wireless | New Cingular Wireless Pcs, Llc - Il | 07/06/1997 |
| 815 | 326 | Oglesby | Wireless | New Cingular Wireless Pcs, Llc - Il | 07/06/1997 |
| 815 | 327 | Plainfield | Landline | Broadwing Communications, Llc - Il | 10/11/1997 |
| 815 | 328 | Lockport | Landline | Broadwing Communications, Llc - Il | 10/11/1997 |
| 815 | 328 | Romeoville | Landline | Broadwing Communications, Llc - Il | 10/11/1997 |
| 815 | 329 | Rockford | Landline | At&t Corp. | 03/11/2013 |
| 815 | 329 | Rockford | Landline | At&t Corp. | 03/11/2013 |
| 815 | 329 | Rockford | Landline | At&t Corp. | 03/11/2013 |
| 815 | 330 | Crescent City | Landline | First Communications Llc - Il | 03/03/2001 |
| 815 | 331 | Mchenry | Landline | Broadwing Communications, Llc - Il | 10/11/1997 |
| 815 | 332 | Cherry Valley | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 333 | Woodstock | Landline | Broadwing Communications, Llc - Il | 10/11/1997 |
| 815 | 334 | Woodstock | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 335 | Winnebago | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 336 | Milledgeville | Landline | Citizens Telecom Co Illinois-frontier Citizens -il | 02/04/1994 |
| 815 | 336 | Sterling | Landline | Citizens Telecom Co Illinois-frontier Citizens -il | 02/04/1994 |
| 815 | 336 | Chadwick | Landline | Citizens Telecom Co Illinois-frontier Citizens -il | 02/04/1994 |
| 815 | 337 | Woodstock | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 338 | Woodstock | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 339 | Granville | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 340 | La Moille | Landline | Comcast Phone Of Illinois, Llc Dba Comco - Il | 08/25/2006 |
| 815 | 341 | Joliet | Wireless | New Cingular Wireless Pcs, Llc - Il | 10/11/1997 |
| 815 | 341 | Joliet | Wireless | New Cingular Wireless Pcs, Llc - Il | 10/11/1997 |
| 815 | 341 | Joliet | Wireless | New Cingular Wireless Pcs, Llc - Il | 10/11/1997 |
| 815 | 342 | Joliet | Wireless | New Cingular Wireless Pcs, Llc - Il | 10/11/1997 |
| 815 | 342 | Joliet | Wireless | New Cingular Wireless Pcs, Llc - Il | 10/11/1997 |
| 815 | 342 | Joliet | Wireless | New Cingular Wireless Pcs, Llc - Il | 10/11/1997 |
| 815 | 343 | Oglesby | Wireless | New Cingular Wireless Pcs, Llc - Il | 01/25/1998 |
| 815 | 344 | Mchenry | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 345 | Woodstock | Landline | Level 3 Communications, Llc - Il | 05/18/1998 |
| 815 | 346 | Gardner | Landline | Broadwing Communications, Llc - Il | 01/25/1998 |
| 815 | 347 | Woodstock | Wireless | Cellco Partnership Dba Verizon Wireless - Il | 02/04/1994 |
| 815 | 347 | Union | Wireless | Cellco Partnership Dba Verizon Wireless - Il | 02/04/1994 |
| 815 | 347 | Wonder Lake | Wireless | Cellco Partnership Dba Verizon Wireless - Il | 02/04/1994 |
| 815 | 348 | Kankakee | Landline | Us Xchange Of Illinois Llc Dba Choice One Comm Il | 10/16/2009 |
| 815 | 349 | Mchenry | Landline | Xo Illinois, Inc. | 06/30/2001 |
| 815 | 350 | Ashton | Landline | Essex Telcom, Inc. | 06/13/2000 |
| 815 | 350 | Dixon | Landline | Essex Telcom, Inc. | 06/13/2000 |
| 815 | 350 | Franklin Grove | Landline | Essex Telcom, Inc. | 06/13/2000 |
| 815 | 351 | Kankakee | Wireless | Cellco Partnership Dba Verizon Wireless - Il | 01/10/1996 |
| 815 | 351 | Bourbonnais | Wireless | Cellco Partnership Dba Verizon Wireless - Il | 01/10/1996 |
| 815 | 351 | Bradley | Wireless | Cellco Partnership Dba Verizon Wireless - Il | 01/10/1996 |
| 815 | 352 | Kankakee | Landline | Broadwing Communications, Llc - Il | 01/25/1998 |
| 815 | 353 | Woodstock | Wireless | Cellco Partnership Dba Verizon Wireless - Il | 02/04/1994 |
| 815 | 353 | Union | Wireless | Cellco Partnership Dba Verizon Wireless - Il | 02/04/1994 |
| 815 | 353 | Wonder Lake | Wireless | Cellco Partnership Dba Verizon Wireless - Il | 02/04/1994 |
| 815 | 354 | Woodstock | Wireless | Cellco Partnership Dba Verizon Wireless - Il | 02/11/1995 |
| 815 | 354 | Union | Wireless | Cellco Partnership Dba Verizon Wireless - Il | 02/11/1995 |
| 815 | 354 | Wonder Lake | Wireless | Cellco Partnership Dba Verizon Wireless - Il | 02/11/1995 |
| 815 | 355 | Woodstock | Wireless | Cellco Partnership Dba Verizon Wireless - Il | 10/11/1997 |
| 815 | 355 | Union | Wireless | Cellco Partnership Dba Verizon Wireless - Il | 10/11/1997 |
| 815 | 355 | Wonder Lake | Wireless | Cellco Partnership Dba Verizon Wireless - Il | 10/11/1997 |
| 815 | 356 | Crystal Lake | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 356 | Crystal Lake | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 357 | Seneca | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 358 | Cornell | Landline | C-r Telephone Co. | 02/04/1994 |
| 815 | 359 | Harmon | Landline | Gallatin River Communications Dba Centurylink | 02/04/1994 |
| 815 | 360 | Sublette | Landline | Essex Telcom, Inc. | 06/13/2000 |
| 815 | 361 | Manhattan | Landline | Broadwing Communications, Llc - Il | 01/25/1998 |
| 815 | 362 | German Valley | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 363 | Mchenry | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 364 | Morris | Landline | Broadwing Communications, Llc - Il | 01/25/1998 |
| 815 | 365 | Reddick | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 366 | Ottawa | Landline | Broadwing Communications, Llc - Il | 01/25/1998 |
| 815 | 367 | Winslow | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 368 | Lostant | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 369 | Lena | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 370 | Kankakee | Wireless | Cellco Partnership Dba Verizon Wireless - Il | 01/10/1996 |
| 815 | 370 | Bourbonnais | Wireless | Cellco Partnership Dba Verizon Wireless - Il | 01/10/1996 |
| 815 | 370 | Bradley | Wireless | Cellco Partnership Dba Verizon Wireless - Il | 01/10/1996 |
| 815 | 371 | Utica | Landline | Broadwing Communications, Llc - Il | 01/25/1998 |
| 815 | 372 | Lockport | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 372 | Romeoville | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 373 | Elwood | Landline | Us Xchange Of Illinois Llc Dba Choice One Comm Il | 11/04/2009 |
| 815 | 374 | Dwight | Landline | Us Xchange Of Illinois Llc Dba Choice One Comm Il | 11/04/2009 |
| 815 | 375 | Dekalb | Wireless | United States Cellular Corp. - Illinois | 09/11/1994 |
| 815 | 376 | Ohio | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 377 | Crescent City | Landline | Broadwing Communications, Llc - Il | 01/25/1998 |
| 815 | 378 | Rockford | Wireless | Sprint Spectrum L.p. | 02/11/1995 |
| 815 | 378 | Rockford | Wireless | Sprint Spectrum L.p. | 02/11/1995 |
| 815 | 378 | Rockford | Wireless | Sprint Spectrum L.p. | 02/11/1995 |
| 815 | 379 | Walnut | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 380 | Sterling | Landline | Essex Telcom, Inc. | 03/03/2001 |
| 815 | 381 | Rockford | Landline | Ameritech Illinois | 04/01/1997 |
| 815 | 381 | Rockford | Landline | Ameritech Illinois | 04/01/1997 |
| 815 | 381 | Rockford | Landline | Ameritech Illinois | 04/01/1997 |
| 815 | 382 | Woodstock | Wireless | New Cingular Wireless Pcs, Llc - Il | 02/04/1994 |
| 815 | 382 | Union | Wireless | New Cingular Wireless Pcs, Llc - Il | 02/04/1994 |
| 815 | 382 | Wonder Lake | Wireless | New Cingular Wireless Pcs, Llc - Il | 02/04/1994 |
| 815 | 383 | Gilman | Wireless | New Cingular Wireless Pcs, Llc - Il | 02/04/1994 |
| 815 | 383 | Crescent City | Wireless | New Cingular Wireless Pcs, Llc - Il | 02/04/1994 |
| 815 | 383 | Watseka | Wireless | New Cingular Wireless Pcs, Llc - Il | 02/04/1994 |
| 815 | 384 | Rochelle | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 384 | Malta | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 384 | Esmond | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 385 | Mchenry | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 386 | Kankakee | Wireless | Cellco Partnership Dba Verizon Wireless - Il | 10/13/1999 |
| 815 | 386 | Bourbonnais | Wireless | Cellco Partnership Dba Verizon Wireless - Il | 10/13/1999 |
| 815 | 386 | Bradley | Wireless | Cellco Partnership Dba Verizon Wireless - Il | 10/13/1999 |
| 815 | 387 | Rockford | Landline | Ameritech Illinois | 05/18/1998 |
| 815 | 387 | Rockford | Landline | Ameritech Illinois | 05/18/1998 |
| 815 | 387 | Rockford | Landline | Ameritech Illinois | 05/18/1998 |
| 815 | 388 | Mchenry | Landline | Sprint Spectrum L.p. | 05/18/1998 |
| 815 | 389 | South Beloit | Landline | Ameritech Illinois | 01/10/1996 |
| 815 | 390 | Braidwood | Landline | Comcast Phone Of Illinois, Llc Dba Comco - Il | 10/14/2004 |
| 815 | 391 | Rockford | Landline | Ameritech Illinois | 07/04/1995 |
| 815 | 391 | Rockford | Landline | Ameritech Illinois | 07/04/1995 |
| 815 | 391 | Rockford | Landline | Ameritech Illinois | 07/04/1995 |
| 815 | 392 | Kinsman | Landline | Kinsman Mutual Telephone Company | 02/04/1994 |
| 815 | 393 | Monroe Center | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 394 | Rockford | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 394 | Rockford | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 394 | Rockford | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 395 | Rockford | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 395 | Rockford | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 395 | Rockford | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 396 | Steward | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 397 | Rockford | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 397 | Rockford | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 397 | Rockford | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 398 | Rockford | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 398 | Rockford | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 398 | Rockford | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 399 | Rockford | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 399 | Rockford | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 399 | Rockford | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 400 | Morrison | Landline | Mediacom Telephony Of Illinois, Llc - Il | 02/15/2010 |
| 815 | 401 | Kankakee | Landline | Level 3 Communications, Llc - Il | 03/03/2001 |
| 815 | 402 | Galena | Landline | Level 3 Communications, Llc - Il | 08/17/2004 |
| 815 | 403 | Mchenry | Wireless | Sprint Spectrum L.p. | 10/31/2000 |
| 815 | 404 | Crystal Lake | Wireless | Sprint Spectrum L.p. | 10/31/2000 |
| 815 | 404 | Crystal Lake | Wireless | Sprint Spectrum L.p. | 10/31/2000 |
| 815 | 405 | Joliet | Wireless | Sprint Spectrum L.p. | 03/03/2001 |
| 815 | 405 | Joliet | Wireless | Sprint Spectrum L.p. | 03/03/2001 |
| 815 | 405 | Joliet | Wireless | Sprint Spectrum L.p. | 03/03/2001 |
| 815 | 406 | Byron | Landline | Frontier North, Inc. - Il | 03/03/2001 |
| 815 | 407 | Lockport | Landline | Ameritech Illinois | 07/04/1995 |
| 815 | 407 | Romeoville | Landline | Ameritech Illinois | 07/04/1995 |
| 815 | 408 | Utica | Landline | First Communications Llc - Il | 03/03/2001 |
| 815 | 409 | Joliet | Wireless | Cellco Partnership Dba Verizon Wireless - Il | 08/18/2005 |
| 815 | 409 | Joliet | Wireless | Cellco Partnership Dba Verizon Wireless - Il | 08/18/2005 |
| 815 | 409 | Joliet | Wireless | Cellco Partnership Dba Verizon Wireless - Il | 08/18/2005 |
| 815 | 410 | La Salle | Landline | Level 3 Communications, Llc - Il | 02/04/2002 |
| 815 | 412 | Frankfort | Landline | Broadwing Communications, Llc - Il | 06/13/2000 |
| 815 | 413 | Morris | Landline | First Communications Llc - Il | 03/03/2001 |
| 815 | 414 | Earlville | Wireless | New Cingular Wireless Pcs, Llc - Il | 10/14/2004 |
| 815 | 415 | Seneca | Landline | Ameritech Illinois | 03/03/2001 |
| 815 | 416 | Morris | Landline | Ameritech Illinois | 03/03/2001 |
| 815 | 417 | Braidwood | Landline | Ameritech Illinois | 03/03/2001 |
| 815 | 418 | Manhattan | Landline | First Communications Llc - Il | 03/03/2001 |
| 815 | 419 | Pontiac | Landline | At&t Local | 03/19/2003 |
| 815 | 420 | Rochelle | Landline | Essex Telcom, Inc. | 06/13/2000 |
| 815 | 420 | Malta | Landline | Essex Telcom, Inc. | 06/13/2000 |
| 815 | 420 | Esmond | Landline | Essex Telcom, Inc. | 06/13/2000 |
| 815 | 421 | Herscher | Landline | Ameritech Illinois | 10/15/1996 |
| 815 | 422 | Saint Anne | Landline | Ameritech Illinois | 10/15/1996 |
| 815 | 423 | Elwood | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 424 | Elwood | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 425 | Crystal Lake | Landline | Broadwing Communications, Llc - Il | 07/22/1999 |
| 815 | 425 | Crystal Lake | Landline | Broadwing Communications, Llc - Il | 07/22/1999 |
| 815 | 426 | Herscher | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 427 | Saint Anne | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 428 | Martinton | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 429 | Sheldon | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 430 | Mchenry | Landline | First Communications Llc - Il | 03/03/2001 |
| 815 | 431 | Ottawa | Landline | Ameritech Illinois | 01/11/1997 |
| 815 | 432 | Watseka | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 433 | Ottawa | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 434 | Ottawa | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 435 | Beaverville | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 436 | Plainfield | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 437 | Putnam | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 438 | Tampico | Landline | Citizens Telecom Co Illinois-frontier Citizens -il | 02/04/1994 |
| 815 | 439 | Plainfield | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 440 | Dixon | Wireless | Cellco Partnership Dba Verizon Wireless - Il | 08/14/1998 |
| 815 | 441 | Sterling | Wireless | Cellco Partnership Dba Verizon Wireless - Il | 08/14/1998 |
| 815 | 442 | Tonica | Landline | Tonica Telephone Co. | 02/04/1994 |
| 815 | 443 | Pearl City | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 444 | Crystal Lake | Landline | Ameritech Illinois | 05/10/1999 |
| 815 | 444 | Crystal Lake | Landline | Ameritech Illinois | 05/10/1999 |
| 815 | 445 | Sheffield | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 445 | Walnut | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 445 | Wyanet | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 446 | Tonica | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 446 | Oglesby | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 446 | Peru | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 447 | Ladd | Landline | Frontier Communications Of Depue, Inc. | 02/04/1994 |
| 815 | 447 | Spring Valley | Landline | Frontier Communications Of Depue, Inc. | 02/04/1994 |
| 815 | 447 | Granville | Landline | Frontier Communications Of Depue, Inc. | 02/04/1994 |
| 815 | 448 | Mazon | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 449 | Dakota | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 450 | Momence | Wireless | New Cingular Wireless Pcs, Llc - Il | 07/27/2004 |
| 815 | 451 | Woodstock | Wireless | New Cingular Wireless Pcs, Llc - Il | 11/20/1998 |
| 815 | 451 | Union | Wireless | New Cingular Wireless Pcs, Llc - Il | 11/20/1998 |
| 815 | 451 | Wonder Lake | Wireless | New Cingular Wireless Pcs, Llc - Il | 11/20/1998 |
| 815 | 452 | Toluca | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 452 | Rutland | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 452 | Wenona | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 453 | Ashton | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 454 | Sheffield | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 455 | Crystal Lake | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 455 | Crystal Lake | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 456 | Ashton | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 456 | Dixon | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 456 | Franklin Grove | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 457 | Cissna Park | Landline | Frontier Communications Of The Carolinas, Inc - Il | 02/04/1994 |
| 815 | 458 | Braidwood | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 459 | Crystal Lake | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 459 | Crystal Lake | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 460 | Joliet | Landline | First Communications Llc - Il | 03/03/2001 |
| 815 | 460 | Joliet | Landline | First Communications Llc - Il | 03/03/2001 |
| 815 | 460 | Joliet | Landline | First Communications Llc - Il | 03/03/2001 |
| 815 | 461 | Lockport | Landline | Xo Illinois, Inc. | 07/22/1999 |
| 815 | 461 | Romeoville | Landline | Xo Illinois, Inc. | 07/22/1999 |
| 815 | 462 | New Lenox | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 463 | New Lenox | Landline | Ameritech Illinois | 10/15/1996 |
| 815 | 464 | Frankfort | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 465 | Grant Park | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 466 | Grant Park | Landline | Ameritech Illinois | 10/15/1996 |
| 815 | 467 | Minooka | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 468 | Manteno | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 469 | Frankfort | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 470 | Rockford | Landline | Ameritech Illinois | 10/31/2001 |
| 815 | 470 | Rockford | Landline | Ameritech Illinois | 10/31/2001 |
| 815 | 470 | Rockford | Landline | Ameritech Illinois | 10/31/2001 |
| 815 | 471 | Watseka | Wireless | Illinois Valley Cellular Rsa 2-i Partnership | 07/04/1995 |
| 815 | 472 | Momence | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 473 | Milford | Landline | Frontier Communications Of The Carolinas, Inc - Il | 02/04/1994 |
| 815 | 473 | Crescent City | Landline | Frontier Communications Of The Carolinas, Inc - Il | 02/04/1994 |
| 815 | 473 | Watseka | Landline | Frontier Communications Of The Carolinas, Inc - Il | 02/04/1994 |
| 815 | 474 | Joliet | Wireless | New Cingular Wireless Pcs, Llc - Il | 02/04/1994 |
| 815 | 474 | Joliet | Wireless | New Cingular Wireless Pcs, Llc - Il | 02/04/1994 |
| 815 | 474 | Joliet | Wireless | New Cingular Wireless Pcs, Llc - Il | 02/04/1994 |
| 815 | 475 | Yorkville | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 475 | Newark | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 475 | Minooka | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 476 | Wilmington | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 477 | Crystal Lake | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 477 | Crystal Lake | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 478 | Manhattan | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 479 | Crystal Lake | Landline | Ameritech Illinois | 01/11/1997 |
| 815 | 479 | Crystal Lake | Landline | Ameritech Illinois | 01/11/1997 |
| 815 | 480 | Rockford | Wireless | Usa Mobility Wireless, Inc. | 03/22/2001 |
| 815 | 480 | Rockford | Wireless | Usa Mobility Wireless, Inc. | 03/22/2001 |
| 815 | 480 | Rockford | Wireless | Usa Mobility Wireless, Inc. | 03/22/2001 |
| 815 | 481 | La Grange Park | Wireless | Illinois Valley Cellular Rsa 2-i Partnership | 05/10/1999 |
| 815 | 481 | Brookfield | Wireless | Illinois Valley Cellular Rsa 2-i Partnership | 05/10/1999 |
| 815 | 481 | Western Springs | Wireless | Illinois Valley Cellular Rsa 2-i Partnership | 05/10/1999 |
| 815 | 482 | Woodstock | Wireless | Sprint Spectrum L.p. | 07/01/1996 |
| 815 | 482 | Union | Wireless | Sprint Spectrum L.p. | 07/01/1996 |
| 815 | 482 | Wonder Lake | Wireless | Sprint Spectrum L.p. | 07/01/1996 |
| 815 | 483 | Joliet | Wireless | Sprint Spectrum L.p. | 11/20/1998 |
| 815 | 483 | Joliet | Wireless | Sprint Spectrum L.p. | 11/20/1998 |
| 815 | 483 | Joliet | Wireless | Sprint Spectrum L.p. | 11/20/1998 |
| 815 | 484 | Rockford | Landline | Ameritech Illinois | 11/20/1998 |
| 815 | 484 | Rockford | Landline | Ameritech Illinois | 11/20/1998 |
| 815 | 484 | Rockford | Landline | Ameritech Illinois | 11/20/1998 |
| 815 | 485 | New Lenox | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 486 | Donovan | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 487 | Plainfield | Landline | First Communications Llc - Il | 03/03/2001 |
| 815 | 488 | La Grange Park | Wireless | Illinois Valley Cellular Rsa 2-i Partnership | 02/04/1994 |
| 815 | 488 | Brookfield | Wireless | Illinois Valley Cellular Rsa 2-i Partnership | 02/04/1994 |
| 815 | 488 | Western Springs | Wireless | Illinois Valley Cellular Rsa 2-i Partnership | 02/04/1994 |
| 815 | 489 | Rockford | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 489 | Rockford | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 489 | Rockford | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 490 | Rockford | Landline | Ameritech Illinois | 02/11/1995 |
| 815 | 490 | Rockford | Landline | Ameritech Illinois | 02/11/1995 |
| 815 | 490 | Rockford | Landline | Ameritech Illinois | 02/11/1995 |
| 815 | 491 | Rockford | Wireless | 365 Wireless, Llc | 03/13/2013 |
| 815 | 491 | Rockford | Wireless | 365 Wireless, Llc | 03/13/2013 |
| 815 | 491 | Rockford | Wireless | 365 Wireless, Llc | 03/13/2013 |
| 815 | 492 | Apple River | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 493 | Lanark | Landline | Citizens Telecom Co Illinois-frontier Citizens -il | 02/04/1994 |
| 815 | 494 | Rockford | Wireless | United States Cellular Corp. - Illinois | 02/04/1994 |
| 815 | 494 | Rockford | Wireless | United States Cellular Corp. - Illinois | 02/04/1994 |
| 815 | 494 | Rockford | Wireless | United States Cellular Corp. - Illinois | 02/04/1994 |
| 815 | 495 | Leland | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 496 | Sheridan | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 497 | Compton | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 498 | Somonauk | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 499 | Sterling | Wireless | United States Cellular Corp. - Illinois | 01/14/2000 |
| 815 | 500 | Marseilles | Landline | Mediacom Telephony Of Illinois, Llc - Il | 04/14/2006 |
| 815 | 501 | Dekalb | Wireless | Sprint Spectrum L.p. | 06/30/2001 |
| 815 | 501 | Sycamore | Wireless | Sprint Spectrum L.p. | 06/30/2001 |
| 815 | 501 | Malta | Wireless | Sprint Spectrum L.p. | 06/30/2001 |
| 815 | 502 | Woodstock | Landline | First Communications Llc - Il | 03/03/2001 |
| 815 | 503 | Mendota | Wireless | Sprint Spectrum L.p. | 03/03/2001 |
| 815 | 504 | Gardner | Landline | First Communications Llc - Il | 03/03/2001 |
| 815 | 505 | Rockford | Wireless | T-mobile Usa, Inc. | 06/30/2001 |
| 815 | 505 | Rockford | Wireless | T-mobile Usa, Inc. | 06/30/2001 |
| 815 | 505 | Rockford | Wireless | T-mobile Usa, Inc. | 06/30/2001 |
| 815 | 506 | Union | Landline | Level 3 Communications, Llc - Il | 02/27/2002 |
| 815 | 507 | Momence | Landline | Level 3 Communications, Llc - Il | 12/28/2001 |
| 815 | 508 | Dekalb | Wireless | New Cingular Wireless Pcs, Llc - Il | 06/16/2004 |
| 815 | 509 | Rockford | Wireless | Sprint Spectrum L.p. | 03/03/2001 |
| 815 | 509 | Rockford | Wireless | Sprint Spectrum L.p. | 03/03/2001 |
| 815 | 509 | Rockford | Wireless | Sprint Spectrum L.p. | 03/03/2001 |
| 815 | 510 | Streator | Landline | Mediacom Telephony Of Illinois, Llc - Il | 01/08/2010 |
| 815 | 512 | Lockport | Landline | First Communications Llc - Il | 03/03/2001 |
| 815 | 512 | Romeoville | Landline | First Communications Llc - Il | 03/03/2001 |
| 815 | 513 | Morris | Landline | Level 3 Communications, Llc - Il | 02/27/2002 |
| 815 | 514 | Joliet | Wireless | Sprint Spectrum L.p. | 01/24/2001 |
| 815 | 514 | Joliet | Wireless | Sprint Spectrum L.p. | 01/24/2001 |
| 815 | 514 | Joliet | Wireless | Sprint Spectrum L.p. | 01/24/2001 |
| 815 | 515 | Watseka | Landline | Level 3 Communications, Llc - Il | 02/04/2002 |
| 815 | 516 | Rockford | Landline | Sprint Spectrum L.p. | 01/24/2001 |
| 815 | 516 | Rockford | Landline | Sprint Spectrum L.p. | 01/24/2001 |
| 815 | 516 | Rockford | Landline | Sprint Spectrum L.p. | 01/24/2001 |
| 815 | 517 | Dekalb | Landline | Mci Worldcom Communications, Inc. - Il | 06/28/2004 |
| 815 | 518 | Coal City | Landline | First Communications Llc - Il | 10/23/2001 |
| 815 | 519 | Rockford | Wireless | Sprint Spectrum L.p. | 07/22/1999 |
| 815 | 519 | Rockford | Wireless | Sprint Spectrum L.p. | 07/22/1999 |
| 815 | 519 | Rockford | Wireless | Sprint Spectrum L.p. | 07/22/1999 |
| 815 | 520 | Rockford | Wireless | Cellco Partnership Dba Verizon Wireless - Il | 01/25/1998 |
| 815 | 520 | Rockford | Wireless | Cellco Partnership Dba Verizon Wireless - Il | 01/25/1998 |
| 815 | 520 | Rockford | Wireless | Cellco Partnership Dba Verizon Wireless - Il | 01/25/1998 |
| 815 | 521 | Minooka | Landline | Ameritech Illinois | 05/10/1999 |
| 815 | 522 | Kirkland | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 523 | Kankakee | Landline | Teleport Communications America, Llc - Il | 02/27/1999 |
| 815 | 524 | Lockport | Landline | Teleport Communications America, Llc - Il | 02/27/1999 |
| 815 | 524 | Romeoville | Landline | Teleport Communications America, Llc - Il | 02/27/1999 |
| 815 | 525 | South Beloit | Landline | Tds Metrocom Inc.-il | 02/27/1999 |
| 815 | 526 | Crystal Lake | Landline | Teleport Communications America, Llc - Il | 02/27/1999 |
| 815 | 526 | Crystal Lake | Landline | Teleport Communications America, Llc - Il | 02/27/1999 |
| 815 | 527 | Woodstock | Landline | Teleport Communications America, Llc - Il | 02/27/1999 |
| 815 | 528 | Mchenry | Landline | Teleport Communications America, Llc - Il | 02/27/1999 |
| 815 | 529 | Woodstock | Wireless | Cellco Partnership Dba Verizon Wireless - Il | 10/13/1999 |
| 815 | 529 | Union | Wireless | Cellco Partnership Dba Verizon Wireless - Il | 10/13/1999 |
| 815 | 529 | Wonder Lake | Wireless | Cellco Partnership Dba Verizon Wireless - Il | 10/13/1999 |
| 815 | 530 | Joliet | Landline | Sprint Spectrum L.p. | 02/27/1999 |
| 815 | 530 | Joliet | Landline | Sprint Spectrum L.p. | 02/27/1999 |
| 815 | 530 | Joliet | Landline | Sprint Spectrum L.p. | 02/27/1999 |
| 815 | 531 | Joliet | Landline | Teleport Communications America, Llc - Il | 02/27/1999 |
| 815 | 531 | Joliet | Landline | Teleport Communications America, Llc - Il | 02/27/1999 |
| 815 | 531 | Joliet | Landline | Teleport Communications America, Llc - Il | 02/27/1999 |
| 815 | 532 | Morris | Wireless | Usa Mobility Wireless, Inc. | 02/04/1994 |
| 815 | 532 | Mazon | Wireless | Usa Mobility Wireless, Inc. | 02/04/1994 |
| 815 | 532 | Coal City | Wireless | Usa Mobility Wireless, Inc. | 02/04/1994 |
| 815 | 533 | La Grange Park | Wireless | Indiana Paging Ntwk | 11/20/1998 |
| 815 | 533 | Brookfield | Wireless | Indiana Paging Ntwk | 11/20/1998 |
| 815 | 533 | Western Springs | Wireless | Indiana Paging Ntwk | 11/20/1998 |
| 815 | 534 | Frankfort | Landline | Level 3 Communications, Llc - Il | 02/27/1999 |
| 815 | 535 | Sterling | Landline | Ameritech Illinois | 09/11/1994 |
| 815 | 536 | La Grange Park | Wireless | Usa Mobility Wireless, Inc. | 01/25/1998 |
| 815 | 536 | Brookfield | Wireless | Usa Mobility Wireless, Inc. | 01/25/1998 |
| 815 | 536 | Western Springs | Wireless | Usa Mobility Wireless, Inc. | 01/25/1998 |
| 815 | 537 | Prophetstown | Landline | Citizens Telecom Co Illinois-frontier Citizens -il | 02/04/1994 |
| 815 | 538 | Mendota | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 539 | Mendota | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 540 | Rockford | Wireless | Sprint Spectrum L.p. | 02/27/1999 |
| 815 | 540 | Rockford | Wireless | Sprint Spectrum L.p. | 02/27/1999 |
| 815 | 540 | Rockford | Wireless | Sprint Spectrum L.p. | 02/27/1999 |
| 815 | 541 | Freeport | Wireless | United States Cellular Corp. - Illinois | 01/14/2000 |
| 815 | 542 | Mineral | Landline | Citizens Telecom Co Illinois-frontier Citizens -il | 02/04/1994 |
| 815 | 542 | Deer Grove | Landline | Citizens Telecom Co Illinois-frontier Citizens -il | 02/04/1994 |
| 815 | 542 | Tampico | Landline | Citizens Telecom Co Illinois-frontier Citizens -il | 02/04/1994 |
| 815 | 543 | Rockford | Wireless | United States Cellular Corp. - Illinois | 02/27/1999 |
| 815 | 543 | Rockford | Wireless | United States Cellular Corp. - Illinois | 02/27/1999 |
| 815 | 543 | Rockford | Wireless | United States Cellular Corp. - Illinois | 02/27/1999 |
| 815 | 544 | Belvidere | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 545 | Joliet | Wireless | New Cingular Wireless Pcs, Llc - Il | 09/11/1994 |
| 815 | 545 | Joliet | Wireless | New Cingular Wireless Pcs, Llc - Il | 09/11/1994 |
| 815 | 545 | Joliet | Wireless | New Cingular Wireless Pcs, Llc - Il | 09/11/1994 |
| 815 | 546 | Joliet | Wireless | New Cingular Wireless Pcs, Llc - Il | 08/14/1998 |
| 815 | 546 | Joliet | Wireless | New Cingular Wireless Pcs, Llc - Il | 08/14/1998 |
| 815 | 546 | Joliet | Wireless | New Cingular Wireless Pcs, Llc - Il | 08/14/1998 |
| 815 | 547 | Belvidere | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 548 | Sterling | Landline | Ameritech Illinois | 11/20/1998 |
| 815 | 549 | Kankakee | Wireless | Sprint Spectrum L.p. | 06/13/2000 |
| 815 | 550 | Grant Park | Landline | Broadwing Communications, Llc - Il | 05/10/1999 |
| 815 | 551 | Savanna | Landline | Essex Telcom, Inc. | 03/03/2001 |
| 815 | 552 | Lockport | Landline | Ameritech Illinois | 04/10/2001 |
| 815 | 552 | Romeoville | Landline | Ameritech Illinois | 04/10/2001 |
| 815 | 553 | Joliet | Landline | Ovation Communications Of Illinois, Inc. | 04/10/2001 |
| 815 | 553 | Joliet | Landline | Ovation Communications Of Illinois, Inc. | 04/10/2001 |
| 815 | 553 | Joliet | Landline | Ovation Communications Of Illinois, Inc. | 04/10/2001 |
| 815 | 554 | Galena | Landline | Mediacom Telephony Of Illinois, Llc - Il | 03/27/2005 |
| 815 | 554 | East Dubuque | Landline | Mediacom Telephony Of Illinois, Llc - Il | 03/27/2005 |
| 815 | 556 | Plainfield | Landline | Broadwing Communications, Llc - Il | 04/10/2001 |
| 815 | 557 | Joliet | Wireless | Sprint Spectrum L.p. | 07/22/1999 |
| 815 | 557 | Joliet | Wireless | Sprint Spectrum L.p. | 07/22/1999 |
| 815 | 557 | Joliet | Wireless | Sprint Spectrum L.p. | 07/22/1999 |
| 815 | 558 | Rockford | Wireless | United States Cellular Corp. - Illinois | 05/10/1999 |
| 815 | 558 | Rockford | Wireless | United States Cellular Corp. - Illinois | 05/10/1999 |
| 815 | 558 | Rockford | Wireless | United States Cellular Corp. - Illinois | 05/10/1999 |
| 815 | 559 | Fulton | Landline | Essex Telcom, Inc. | 06/13/2000 |
| 815 | 560 | Harvard | Landline | Sprint Spectrum L.p. | 05/03/2002 |
| 815 | 561 | Rochelle | Landline | Frontier North, Inc. - Il | 04/01/1997 |
| 815 | 562 | Rochelle | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 563 | Freeport | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 563 | Dakota | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 563 | Mc Connell | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 564 | Sterling | Landline | Ameritech Illinois | 07/22/1999 |
| 815 | 565 | Morrison | Landline | Mediacom Telephony Of Illinois, Llc - Il | 03/27/2005 |
| 815 | 566 | Belvidere | Landline | Level 3 Communications, Llc - Il | 06/21/2002 |
| 815 | 567 | Dwight | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 567 | Cabery | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 567 | Emington | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 568 | Marengo | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 569 | Capron | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 570 | Sandwich | Landline | Level 3 Communications, Llc - Il | 08/21/2002 |
| 815 | 571 | Shannon | Landline | Mediacom Telephony Of Illinois, Llc - Il | 04/21/2006 |
| 815 | 572 | Marengo | Landline | Broadwing Communications, Llc - Il | 06/13/2000 |
| 815 | 573 | Kankakee | Landline | Level 3 Communications, Llc - Il | 02/27/2002 |
| 815 | 574 | Harmon | Landline | Essex Telcom, Inc. | 06/13/2000 |
| 815 | 575 | Woodstock | Wireless | New Cingular Wireless Pcs, Llc - Il | 06/30/2001 |
| 815 | 576 | Polo | Landline | Essex Telcom, Inc. | 06/13/2000 |
| 815 | 577 | Plainfield | Landline | Ameritech Illinois | 01/14/2000 |
| 815 | 578 | Mchenry | Landline | Ameritech Illinois | 01/14/2000 |
| 815 | 579 | La Salle | Wireless | Sprint Spectrum L.p. | 01/14/2000 |
| 815 | 579 | Oglesby | Wireless | Sprint Spectrum L.p. | 01/14/2000 |
| 815 | 579 | Peru | Wireless | Sprint Spectrum L.p. | 01/14/2000 |
| 815 | 580 | Rockford | Landline | At&t Local | 03/18/2003 |
| 815 | 580 | Rockford | Landline | At&t Local | 03/18/2003 |
| 815 | 580 | Rockford | Landline | At&t Local | 03/18/2003 |
| 815 | 581 | Spring Grove | Landline | Comcast Phone Of Illinois, Llc Dba Comco - Il | 10/06/2005 |
| 815 | 582 | Joliet | Wireless | T-mobile Usa, Inc. | 10/06/2005 |
| 815 | 582 | Joliet | Wireless | T-mobile Usa, Inc. | 10/06/2005 |
| 815 | 582 | Joliet | Wireless | T-mobile Usa, Inc. | 10/06/2005 |
| 815 | 583 | Morrison | Landline | Essex Telcom, Inc. | 06/13/2000 |
| 815 | 584 | Dwight | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 585 | Morris | Landline | Level 3 Communications, Llc - Il | 05/03/2002 |
| 815 | 586 | Ransom | Landline | C-r Telephone Co. | 02/04/1994 |
| 815 | 587 | Ottawa | Landline | Level 3 Communications, Llc - Il | 04/02/2002 |
| 815 | 588 | Lockport | Landline | Ameritech Illinois | 10/15/1996 |
| 815 | 588 | Romeoville | Landline | Ameritech Illinois | 10/15/1996 |
| 815 | 589 | Fulton | Landline | Citizens Telecom Co Illinois-frontier Citizens -il | 02/04/1994 |
| 815 | 590 | Sterling | Wireless | Sprint Spectrum L.p. | 07/14/2003 |
| 815 | 591 | Hanover | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 592 | Kankakee | Wireless | Cellco Partnership Dba Verizon Wireless - Il | 02/04/1994 |
| 815 | 592 | Bourbonnais | Wireless | Cellco Partnership Dba Verizon Wireless - Il | 02/04/1994 |
| 815 | 592 | Bradley | Wireless | Cellco Partnership Dba Verizon Wireless - Il | 02/04/1994 |
| 815 | 593 | Dekalb | Landline | At&t Local | 08/20/2000 |
| 815 | 594 | Apple River | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 595 | Oregon | Landline | At&t Local | 10/02/2003 |
| 815 | 596 | Marengo | Landline | At&t Corp. | 02/10/2006 |
| 815 | 597 | Garden Prairie | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 597 | Belvidere | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 597 | Marengo | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 598 | Hanover | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 598 | Elizabeth | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 598 | Stockton | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 599 | Freeport | Landline | Frontier North, Inc. - Il | 07/22/1999 |
| 815 | 600 | Joliet | Landline | New Cingular Wireless Pcs, Llc - Il | 07/14/2003 |
| 815 | 600 | Joliet | Landline | New Cingular Wireless Pcs, Llc - Il | 07/14/2003 |
| 815 | 600 | Joliet | Landline | New Cingular Wireless Pcs, Llc - Il | 07/14/2003 |
| 815 | 601 | Rockford | Landline | United States Cellular Corp. - Illinois | 05/02/2004 |
| 815 | 601 | Rockford | Landline | United States Cellular Corp. - Illinois | 05/02/2004 |
| 815 | 601 | Rockford | Landline | United States Cellular Corp. - Illinois | 05/02/2004 |
| 815 | 602 | Kankakee | Landline | First Communications Llc - Il | 03/03/2001 |
| 815 | 603 | Kankakee | Wireless | T-mobile Usa, Inc. | 09/28/2001 |
| 815 | 604 | Oregon | Landline | Essex Telcom, Inc. | 06/13/2000 |
| 815 | 604 | Dixon | Landline | Essex Telcom, Inc. | 06/13/2000 |
| 815 | 604 | Franklin Grove | Landline | Essex Telcom, Inc. | 06/13/2000 |
| 815 | 605 | Grant Park | Landline | Level 3 Communications, Llc - Il | 04/02/2002 |
| 815 | 606 | Ottawa | Landline | First Communications Llc - Il | 03/03/2001 |
| 815 | 607 | Flanagan | Landline | Itv 3, Llc Dba I3 Broadband | 11/16/2004 |
| 815 | 608 | Rockford | Wireless | T-mobile Usa, Inc. | 09/30/2002 |
| 815 | 608 | Rockford | Wireless | T-mobile Usa, Inc. | 09/30/2002 |
| 815 | 608 | Rockford | Wireless | T-mobile Usa, Inc. | 09/30/2002 |
| 815 | 609 | Plainfield | Landline | Ameritech Illinois | 10/24/2001 |
| 815 | 610 | Cornell | Landline | Itv 3, Llc Dba I3 Broadband | 11/16/2004 |
| 815 | 612 | Graymont | Landline | Itv 3, Llc Dba I3 Broadband | 11/16/2004 |
| 815 | 613 | Mount Carroll | Landline | Essex Telcom, Inc. | 03/03/2001 |
| 815 | 614 | Kankakee | Landline | Ameritech Illinois | 05/01/2002 |
| 815 | 615 | Mendota | Landline | Level 3 Communications, Llc - Il | 10/31/2001 |
| 815 | 616 | Freeport | Wireless | T-mobile Usa, Inc. | 01/07/2004 |
| 815 | 617 | Ottawa | Landline | At&t Local | 06/30/2001 |
| 815 | 618 | Freeport | Wireless | New Cingular Wireless Pcs, Llc - Il | 12/21/2006 |
| 815 | 619 | Rockton | Landline | Aero North Communications, Inc. - Il | 05/27/2003 |
| 815 | 620 | Annawan | Landline | Essex Telcom, Inc. | 06/13/2000 |
| 815 | 620 | Atkinson | Landline | Essex Telcom, Inc. | 06/13/2000 |
| 815 | 620 | Prophetstown | Landline | Essex Telcom, Inc. | 06/13/2000 |
| 815 | 621 | Rockford | Wireless | Sprint Spectrum L.p. | 10/13/1999 |
| 815 | 621 | Rockford | Wireless | Sprint Spectrum L.p. | 10/13/1999 |
| 815 | 621 | Rockford | Wireless | Sprint Spectrum L.p. | 10/13/1999 |
| 815 | 622 | Sterling | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 623 | Roscoe | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 624 | Rockton | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 625 | Sterling | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 626 | Sterling | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 627 | Paw Paw | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 628 | West Brooklyn | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 629 | Durand | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 629 | South Beloit | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 629 | Rockton | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 630 | Joliet | Wireless | T-mobile Usa, Inc. | 07/24/2006 |
| 815 | 630 | Joliet | Wireless | T-mobile Usa, Inc. | 07/24/2006 |
| 815 | 630 | Joliet | Wireless | T-mobile Usa, Inc. | 07/24/2006 |
| 815 | 631 | Sterling | Landline | Ameritech Illinois | 04/15/1996 |
| 815 | 632 | Sterling | Landline | Ameritech Illinois | 10/11/1997 |
| 815 | 633 | Loves Park | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 634 | Coal City | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 635 | Chatsworth | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 636 | Loves Park | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 637 | Loves Park | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 638 | La Moille | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 639 | Loves Park | Landline | Ameritech Illinois | 01/10/1996 |
| 815 | 640 | Ottawa | Landline | Teleport Communications America, Llc - Il | 12/28/2001 |
| 815 | 641 | Rockford | Wireless | Cellco Partnership Dba Verizon Wireless - Il | 01/21/2008 |
| 815 | 641 | Rockford | Wireless | Cellco Partnership Dba Verizon Wireless - Il | 01/21/2008 |
| 815 | 641 | Rockford | Wireless | Cellco Partnership Dba Verizon Wireless - Il | 01/21/2008 |
| 815 | 642 | Minooka | Landline | Broadwing Communications, Llc - Il | 10/13/1999 |
| 815 | 643 | Princeton | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 643 | Arlington | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 643 | Malden | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 644 | Crescent City | Landline | Rcn Telecom Services Of Illinois, Inc. - Il | 07/22/1999 |
| 815 | 645 | Davis Junction | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 645 | Byron | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 645 | Stillman Valley | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 646 | Tiskilwa | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 647 | Cullom | Landline | Mediacom Telephony Of Illinois, Llc - Il | 03/27/2005 |
| 815 | 648 | Hebron | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 649 | Gardner | Landline | Rcn Telecom Services Of Illinois, Inc. - Il | 07/22/1999 |
| 815 | 650 | Freeport | Landline | At&t Local | 08/20/2000 |
| 815 | 651 | Joliet | Landline | Rcn Telecom Services Of Illinois, Inc. - Il | 07/22/1999 |
| 815 | 651 | Joliet | Landline | Rcn Telecom Services Of Illinois, Inc. - Il | 07/22/1999 |
| 815 | 651 | Joliet | Landline | Rcn Telecom Services Of Illinois, Inc. - Il | 07/22/1999 |
| 815 | 652 | Oregon | Landline | Gallatin River Communications Dba Centurylink | 02/04/1994 |
| 815 | 652 | Dixon | Landline | Gallatin River Communications Dba Centurylink | 02/04/1994 |
| 815 | 652 | Franklin Grove | Landline | Gallatin River Communications Dba Centurylink | 02/04/1994 |
| 815 | 653 | Wonder Lake | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 654 | Loves Park | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 655 | Milledgeville | Landline | Essex Telcom, Inc. | 06/13/2000 |
| 815 | 655 | Sterling | Landline | Essex Telcom, Inc. | 06/13/2000 |
| 815 | 655 | Chadwick | Landline | Essex Telcom, Inc. | 06/13/2000 |
| 815 | 656 | Freeport | Landline | Level 3 Communications, Llc - Il | 06/26/2002 |
| 815 | 657 | Forrest | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 658 | Lanark | Landline | Essex Telcom, Inc. | 06/13/2000 |
| 815 | 659 | Princeton | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 659 | Granville | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 659 | Hennepin | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 660 | Lockport | Landline | Rcn Telecom Services Of Illinois, Inc. - Il | 07/22/1999 |
| 815 | 660 | Romeoville | Landline | Rcn Telecom Services Of Illinois, Inc. - Il | 07/22/1999 |
| 815 | 661 | Morris | Landline | Rcn Telecom Services Of Illinois, Inc. - Il | 07/22/1999 |
| 815 | 662 | Momence | Landline | Level 3 Communications, Llc - Il | 11/20/1998 |
| 815 | 663 | Spring Valley | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 664 | Spring Valley | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 665 | Ottawa | Landline | Rcn Telecom Services Of Illinois, Inc. - Il | 07/22/1999 |
| 815 | 666 | Joliet | Wireless | Cellco Partnership Dba Verizon Wireless - Il | 08/30/2006 |
| 815 | 666 | Joliet | Wireless | Cellco Partnership Dba Verizon Wireless - Il | 08/30/2006 |
| 815 | 666 | Joliet | Wireless | Cellco Partnership Dba Verizon Wireless - Il | 08/30/2006 |
| 815 | 667 | Utica | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 668 | Rockford | Landline | Neutral Tandem-illinois, Llc - Il | 04/02/2009 |
| 815 | 668 | Rockford | Landline | Neutral Tandem-illinois, Llc - Il | 04/02/2009 |
| 815 | 668 | Rockford | Landline | Neutral Tandem-illinois, Llc - Il | 04/02/2009 |
| 815 | 669 | Mchenry | Landline | Level 3 Communications, Llc - Il | 11/20/1998 |
| 815 | 670 | Rockford | Wireless | Sprint Spectrum L.p. | 06/30/2001 |
| 815 | 670 | Rockford | Wireless | Sprint Spectrum L.p. | 06/30/2001 |
| 815 | 670 | Rockford | Wireless | Sprint Spectrum L.p. | 06/30/2001 |
| 815 | 671 | Joliet | Landline | Level 3 Communications, Llc - Il | 11/20/1998 |
| 815 | 671 | Joliet | Landline | Level 3 Communications, Llc - Il | 11/20/1998 |
| 815 | 671 | Joliet | Landline | Level 3 Communications, Llc - Il | 11/20/1998 |
| 815 | 672 | Streator | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 673 | Streator | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 674 | Streator | Wireless | New Cingular Wireless Pcs, Llc - Il | 02/04/1994 |
| 815 | 675 | Spring Grove | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 676 | Plainfield | Landline | Level 3 Communications, Llc - Il | 11/20/1998 |
| 815 | 677 | Elizabeth | Landline | Cellco Partnership Dba Verizon Wireless - Il | 03/17/2005 |
| 815 | 678 | Richmond | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 679 | Mchenry | Landline | Rcn Telecom Services Of Illinois, Inc. - Il | 07/22/1999 |
| 815 | 680 | Manhattan | Landline | Rcn Telecom Services Of Illinois, Inc. - Il | 07/22/1999 |
| 815 | 681 | Rockford | Landline | Cellco Partnership Dba Verizon Wireless - Il | 07/30/2010 |
| 815 | 681 | Rockford | Landline | Cellco Partnership Dba Verizon Wireless - Il | 07/30/2010 |
| 815 | 681 | Rockford | Landline | Cellco Partnership Dba Verizon Wireless - Il | 07/30/2010 |
| 815 | 682 | Milford | Landline | Frontier Communications Of The Carolinas, Inc - Il | 02/04/1994 |
| 815 | 682 | Sheldon | Landline | Frontier Communications Of The Carolinas, Inc - Il | 02/04/1994 |
| 815 | 682 | Wellington | Landline | Frontier Communications Of The Carolinas, Inc - Il | 02/04/1994 |
| 815 | 683 | Crescent City | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 684 | Chadwick | Landline | Citizens Telecom Co Illinois-frontier Citizens -il | 02/04/1994 |
| 815 | 685 | Joliet | Wireless | New Cingular Wireless Pcs, Llc - Il | 09/11/1994 |
| 815 | 685 | Joliet | Wireless | New Cingular Wireless Pcs, Llc - Il | 09/11/1994 |
| 815 | 685 | Joliet | Wireless | New Cingular Wireless Pcs, Llc - Il | 09/11/1994 |
| 815 | 686 | Piper City | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 687 | Woodstock | Landline | Rcn Telecom Services Of Illinois, Inc. - Il | 07/22/1999 |
| 815 | 688 | Strawn | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 689 | Cullom | Landline | Frontier Communications Of Illinois, Inc. | 02/04/1994 |
| 815 | 690 | Joliet | Wireless | Sprint Spectrum L.p. | 07/22/1999 |
| 815 | 690 | Joliet | Wireless | Sprint Spectrum L.p. | 07/22/1999 |
| 815 | 690 | Joliet | Wireless | Sprint Spectrum L.p. | 07/22/1999 |
| 815 | 691 | Utica | Landline | Rcn Telecom Services Of Illinois, Inc. - Il | 07/22/1999 |
| 815 | 692 | Fairbury | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 693 | Joliet | Wireless | Sprint Spectrum L.p. | 02/11/1995 |
| 815 | 693 | Joliet | Wireless | Sprint Spectrum L.p. | 02/11/1995 |
| 815 | 693 | Joliet | Wireless | Sprint Spectrum L.p. | 02/11/1995 |
| 815 | 694 | Clifton | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 695 | Newark | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 696 | Roscoe | Landline | Aero North Communications, Inc. - Il | 05/27/2003 |
| 815 | 697 | Chebanse | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 698 | Ashkum | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 699 | Wyanet | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 701 | Woodstock | Landline | Level 3 Communications, Llc - Il | 04/02/2002 |
| 815 | 702 | Saunemin | Landline | Centurylink Communications Llc | 03/27/2005 |
| 815 | 703 | Rockford | Wireless | Sprint Spectrum L.p. | 06/04/2002 |
| 815 | 703 | Rockford | Wireless | Sprint Spectrum L.p. | 06/04/2002 |
| 815 | 703 | Rockford | Wireless | Sprint Spectrum L.p. | 06/04/2002 |
| 815 | 704 | South Beloit | Landline | Mcleodusa Telecommunications Services, Inc.- Il | 02/23/2001 |
| 815 | 705 | Morris | Landline | Teleport Communications America, Llc - Il | 12/28/2001 |
| 815 | 706 | Lyndon | Landline | Essex Telcom, Inc. | 06/13/2000 |
| 815 | 707 | Gilman | Landline | Level 3 Communications, Llc - Il | 12/06/2001 |
| 815 | 708 | Rockford | Landline | Comcast Phone Of Illinois, Llc Dba Comco - Il | 06/23/2006 |
| 815 | 708 | Rockford | Landline | Comcast Phone Of Illinois, Llc Dba Comco - Il | 06/23/2006 |
| 815 | 708 | Rockford | Landline | Comcast Phone Of Illinois, Llc Dba Comco - Il | 06/23/2006 |
| 815 | 709 | Coal City | Landline | Level 3 Communications, Llc - Il | 12/28/2001 |
| 815 | 710 | Morris | Landline | At&t Local | 01/24/2001 |
| 815 | 712 | Harvard | Wireless | Sprint Spectrum L.p. | 07/05/2002 |
| 815 | 713 | Rockford | Landline | New Cingular Wireless Pcs, Llc - Il | 09/28/2001 |
| 815 | 713 | Rockford | Landline | New Cingular Wireless Pcs, Llc - Il | 09/28/2001 |
| 815 | 713 | Rockford | Landline | New Cingular Wireless Pcs, Llc - Il | 09/28/2001 |
| 815 | 714 | Joliet | Landline | Bandwidth.com Clec, Llc - Il | 06/30/2001 |
| 815 | 714 | Joliet | Landline | Bandwidth.com Clec, Llc - Il | 06/30/2001 |
| 815 | 714 | Joliet | Landline | Bandwidth.com Clec, Llc - Il | 06/30/2001 |
| 815 | 715 | Joliet | Wireless | New Cingular Wireless Pcs, Llc - Il | 05/22/2001 |
| 815 | 715 | Joliet | Wireless | New Cingular Wireless Pcs, Llc - Il | 05/22/2001 |
| 815 | 715 | Joliet | Wireless | New Cingular Wireless Pcs, Llc - Il | 05/22/2001 |
| 815 | 716 | Sterling | Wireless | Sprint Spectrum L.p. | 10/31/2001 |
| 815 | 717 | New Lenox | Landline | Broadwing Communications, Llc - Il | 06/30/2001 |
| 815 | 718 | Sterling | Wireless | United States Cellular Corp. - Illinois | 10/22/2002 |
| 815 | 719 | Princeton | Wireless | Sprint Spectrum L.p. | 07/05/2002 |
| 815 | 720 | Rockford | Landline | Ameritech Illinois | 07/04/1995 |
| 815 | 720 | Rockford | Landline | Ameritech Illinois | 07/04/1995 |
| 815 | 720 | Rockford | Landline | Ameritech Illinois | 07/04/1995 |
| 815 | 721 | Rockford | Landline | At&t Local | 08/20/2000 |
| 815 | 721 | Rockford | Landline | At&t Local | 08/20/2000 |
| 815 | 721 | Rockford | Landline | At&t Local | 08/20/2000 |
| 815 | 722 | Joliet | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 722 | Joliet | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 722 | Joliet | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 723 | Joliet | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 723 | Joliet | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 723 | Joliet | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 724 | Joliet | Landline | Ameritech Illinois | 10/15/1996 |
| 815 | 724 | Joliet | Landline | Ameritech Illinois | 10/15/1996 |
| 815 | 724 | Joliet | Landline | Ameritech Illinois | 10/15/1996 |
| 815 | 725 | Joliet | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 725 | Joliet | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 725 | Joliet | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 726 | Joliet | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 726 | Joliet | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 726 | Joliet | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 727 | Joliet | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 727 | Joliet | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 727 | Joliet | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 728 | Wonder Lake | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 729 | Joliet | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 729 | Joliet | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 729 | Joliet | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 730 | Joliet | Landline | Ameritech Illinois | 10/15/1996 |
| 815 | 730 | Joliet | Landline | Ameritech Illinois | 10/15/1996 |
| 815 | 730 | Joliet | Landline | Ameritech Illinois | 10/15/1996 |
| 815 | 731 | Plainfield | Landline | Ameritech Illinois | 02/16/2006 |
| 815 | 731 | Plainfield | Landline | Ameritech Illinois | 02/16/2006 |
| 815 | 731 | Plainfield | Landline | Ameritech Illinois | 02/16/2006 |
| 815 | 732 | Oregon | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 733 | Plainfield | Landline | Rcn Telecom Services Of Illinois, Inc. - Il | 07/22/1999 |
| 815 | 734 | Mount Morris | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 735 | Joliet | Wireless | New Cingular Wireless Pcs, Llc - Il | 02/04/1994 |
| 815 | 735 | Joliet | Wireless | New Cingular Wireless Pcs, Llc - Il | 02/04/1994 |
| 815 | 735 | Joliet | Wireless | New Cingular Wireless Pcs, Llc - Il | 02/04/1994 |
| 815 | 736 | Newark | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 737 | Poplar Grove | Landline | Sharon Telephone Co. - Illinois | 01/10/1996 |
| 815 | 737 | Capron | Landline | Sharon Telephone Co. - Illinois | 01/10/1996 |
| 815 | 737 | Harvard | Landline | Sharon Telephone Co. - Illinois | 01/10/1996 |
| 815 | 738 | Leaf River | Landline | Leaf River Telephone Co. | 02/04/1994 |
| 815 | 739 | Sycamore | Wireless | Sprint Spectrum L.p. | 02/11/1995 |
| 815 | 740 | Joliet | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 740 | Joliet | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 740 | Joliet | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 741 | Joliet | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 741 | Joliet | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 741 | Joliet | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 742 | Rockford | Wireless | United States Cellular Corp. - Illinois | 07/04/1995 |
| 815 | 742 | Rockford | Wireless | United States Cellular Corp. - Illinois | 07/04/1995 |
| 815 | 742 | Rockford | Wireless | United States Cellular Corp. - Illinois | 07/04/1995 |
| 815 | 743 | Graymont | Landline | Frontier Communications Of Prairie, Inc. | 02/04/1994 |
| 815 | 744 | Joliet | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 744 | Joliet | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 744 | Joliet | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 745 | Warren | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 746 | Marseilles | Landline | Marseilles Telephone Co. Of Marseilles | 05/13/2008 |
| 815 | 747 | East Dubuque | Landline | Citizens Telecom Co Illinois-frontier Citizens -il | 02/04/1994 |
| 815 | 748 | Dekalb | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 749 | Rockford | Wireless | Answer America Dba Answer Usa | 01/10/1996 |
| 815 | 749 | Rockford | Wireless | Answer America Dba Answer Usa | 01/10/1996 |
| 815 | 749 | Rockford | Wireless | Answer America Dba Answer Usa | 01/10/1996 |
| 815 | 750 | Marseilles | Landline | Mtco Communications, Inc. | 01/23/2003 |
| 815 | 751 | Dekalb | Wireless | Cellco Partnership Dba Verizon Wireless - Il | 02/04/1994 |
| 815 | 752 | Dekalb | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 753 | Dekalb | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 754 | Dekalb | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 755 | Dekalb | Wireless | Neutral Tandem-illinois, Llc - Il | 01/08/2016 |
| 815 | 756 | Dekalb | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 757 | Dekalb | Wireless | United States Cellular Corp. - Illinois | 02/04/1994 |
| 815 | 758 | Dekalb | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 759 | Mchenry | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 760 | Putnam | Wireless | Cellco Partnership Dba Verizon Wireless - Il | 10/25/2005 |
| 815 | 760 | Hennepin | Wireless | Cellco Partnership Dba Verizon Wireless - Il | 10/25/2005 |
| 815 | 760 | Tiskilwa | Wireless | Cellco Partnership Dba Verizon Wireless - Il | 10/25/2005 |
| 815 | 761 | Dekalb | Wireless | Cellco Partnership Dba Verizon Wireless - Il | 01/10/1996 |
| 815 | 762 | Dekalb | Wireless | Cellco Partnership Dba Verizon Wireless - Il | 01/25/1998 |
| 815 | 763 | Rockford | Wireless | Answer America Dba Answer Usa | 05/18/1998 |
| 815 | 763 | Rockford | Wireless | Answer America Dba Answer Usa | 05/18/1998 |
| 815 | 763 | Rockford | Wireless | Answer America Dba Answer Usa | 05/18/1998 |
| 815 | 764 | Dekalb | Wireless | United States Cellular Corp. - Illinois | 08/14/1998 |
| 815 | 765 | Poplar Grove | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 766 | Dekalb | Wireless | United States Cellular Corp. - Illinois | 02/27/1999 |
| 815 | 767 | La Grange Park | Wireless | American Messaging Services, Llc | 04/16/2001 |
| 815 | 767 | Brookfield | Wireless | American Messaging Services, Llc | 04/16/2001 |
| 815 | 767 | Western Springs | Wireless | American Messaging Services, Llc | 04/16/2001 |
| 815 | 768 | Joliet | Wireless | Ameritech Illinois | 08/20/2000 |
| 815 | 768 | Joliet | Wireless | Ameritech Illinois | 08/20/2000 |
| 815 | 768 | Joliet | Wireless | Ameritech Illinois | 08/20/2000 |
| 815 | 769 | Seneca | Landline | Broadwing Communications, Llc - Il | 04/27/2001 |
| 815 | 770 | Harvard | Landline | Charter Fiberlink - Illinois, Llc - Il | 02/13/2006 |
| 815 | 771 | Ashkum | Landline | Rcn Telecom Services Of Illinois, Inc. - Il | 07/22/1999 |
| 815 | 772 | Morrison | Landline | Citizens Telecom Co Illinois-frontier Citizens -il | 02/04/1994 |
| 815 | 773 | Joliet | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 773 | Joliet | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 773 | Joliet | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 774 | Joliet | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 774 | Joliet | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 774 | Joliet | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 775 | Woodstock | Wireless | Usa Mobility Wireless, Inc. | 07/04/1995 |
| 815 | 776 | Galena | Landline | Ameritech Illinois | 07/22/1999 |
| 815 | 777 | Galena | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 778 | Lyndon | Landline | Citizens Telecom Co Illinois-frontier Citizens -il | 02/04/1994 |
| 815 | 780 | La Salle | Landline | Broadwing Communications, Llc - Il | 08/22/2001 |
| 815 | 781 | Chebanse | Landline | Rcn Telecom Services Of Illinois, Inc. - Il | 07/22/1999 |
| 815 | 782 | Plainfield | Landline | Broadwing Communications, Llc - Il | 03/03/2001 |
| 815 | 783 | Gilman | Landline | Rcn Telecom Services Of Illinois, Inc. - Il | 07/22/1999 |
| 815 | 784 | Genoa | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 785 | Watseka | Landline | Rcn Telecom Services Of Illinois, Inc. - Il | 07/22/1999 |
| 815 | 786 | Sandwich | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 787 | Dekalb | Landline | Frontier North, Inc. - Il | 05/18/1998 |
| 815 | 788 | Crystal Lake | Landline | Ameritech Illinois | 03/22/2001 |
| 815 | 788 | Crystal Lake | Landline | Ameritech Illinois | 03/22/2001 |
| 815 | 789 | Orangeville | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 790 | Woodstock | Wireless | Sprint Spectrum L.p. | 06/30/2001 |
| 815 | 790 | Union | Wireless | Sprint Spectrum L.p. | 06/30/2001 |
| 815 | 790 | Wonder Lake | Wireless | Sprint Spectrum L.p. | 06/30/2001 |
| 815 | 791 | Joliet | Wireless | Sprint Spectrum L.p. | 07/24/2001 |
| 815 | 791 | Joliet | Wireless | Sprint Spectrum L.p. | 07/24/2001 |
| 815 | 791 | Joliet | Wireless | Sprint Spectrum L.p. | 07/24/2001 |
| 815 | 792 | Earlville | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 793 | Dekalb | Wireless | T-mobile Usa, Inc. | 06/25/2001 |
| 815 | 793 | Sycamore | Wireless | T-mobile Usa, Inc. | 06/25/2001 |
| 815 | 793 | Malta | Wireless | T-mobile Usa, Inc. | 06/25/2001 |
| 815 | 794 | Marseilles | Landline | Marseilles Telephone Co. Of Marseilles | 10/15/1996 |
| 815 | 795 | Marseilles | Landline | Marseilles Telephone Co. Of Marseilles | 02/04/1994 |
| 815 | 796 | Flanagan | Landline | Frontier Communications Of Prairie, Inc. | 02/04/1994 |
| 815 | 797 | Somonauk | Landline | Level 3 Communications, Llc - Il | 12/06/2001 |
| 815 | 798 | Milledgeville | Landline | Essex Telcom, Inc. | 06/13/2000 |
| 815 | 799 | Harmon | Landline | Level 3 Communications, Llc - Il | 02/13/2002 |
| 815 | 799 | Sterling | Landline | Level 3 Communications, Llc - Il | 02/13/2002 |
| 815 | 799 | Rock Falls | Landline | Level 3 Communications, Llc - Il | 02/13/2002 |
| 815 | 800 | Poplar Grove | Landline | Mediacom Telephony Of Illinois, Llc - Il | 03/24/2010 |
| 815 | 801 | Freeport | Landline | Aero North Communications, Inc. - Il | 03/03/2001 |
| 815 | 802 | Kankakee | Landline | Ameritech Illinois | 09/28/2001 |
| 815 | 803 | Byron | Landline | Aero North Communications, Inc. - Il | 03/22/2001 |
| 815 | 804 | Pecatonica | Landline | Aero North Communications, Inc. - Il | 03/03/2001 |
| 815 | 805 | Durand | Landline | Aero North Communications, Inc. - Il | 03/03/2001 |
| 815 | 806 | Frankfort | Landline | Ameritech Illinois | 03/03/2001 |
| 815 | 807 | German Valley | Landline | Aero North Communications, Inc. - Il | 03/03/2001 |
| 815 | 808 | Winslow | Landline | Aero North Communications, Inc. - Il | 03/03/2001 |
| 815 | 809 | Lena | Landline | Aero North Communications, Inc. - Il | 03/03/2001 |
| 815 | 810 | Pearl City | Landline | Aero North Communications, Inc. - Il | 03/03/2001 |
| 815 | 812 | Dakota | Landline | Aero North Communications, Inc. - Il | 03/03/2001 |
| 815 | 813 | Apple River | Landline | Aero North Communications, Inc. - Il | 03/03/2001 |
| 815 | 814 | Woodstock | Wireless | T-mobile Usa, Inc. | 04/27/2001 |
| 815 | 816 | Freeport | Landline | Aero North Communications, Inc. - Il | 03/03/2001 |
| 815 | 816 | Dakota | Landline | Aero North Communications, Inc. - Il | 03/03/2001 |
| 815 | 816 | Mc Connell | Landline | Aero North Communications, Inc. - Il | 03/03/2001 |
| 815 | 817 | Hanover | Landline | Aero North Communications, Inc. - Il | 03/03/2001 |
| 815 | 818 | Warren | Landline | Aero North Communications, Inc. - Il | 03/03/2001 |
| 815 | 819 | Orangeville | Landline | Aero North Communications, Inc. - Il | 03/03/2001 |
| 815 | 820 | Elizabeth | Landline | Aero North Communications, Inc. - Il | 03/03/2001 |
| 815 | 821 | Freeport | Landline | United States Cellular Corp. - Illinois | 05/22/2001 |
| 815 | 822 | Ancona | Wireless | New Cingular Wireless Pcs, Llc - Il | 04/27/2001 |
| 815 | 822 | Grand Ridge | Wireless | New Cingular Wireless Pcs, Llc - Il | 04/27/2001 |
| 815 | 822 | Streator | Wireless | New Cingular Wireless Pcs, Llc - Il | 04/27/2001 |
| 815 | 823 | Joliet | Landline | Xo Illinois, Inc. | 02/27/1999 |
| 815 | 823 | Joliet | Landline | Xo Illinois, Inc. | 02/27/1999 |
| 815 | 823 | Joliet | Landline | Xo Illinois, Inc. | 02/27/1999 |
| 815 | 824 | Shabbona | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 825 | Malta | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 826 | Somonauk | Wireless | Cellco Partnership Dba Verizon Wireless - Il | 05/12/2004 |
| 815 | 827 | Maple Park | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 828 | Minooka | Landline | Xo Illinois, Inc. | 08/22/2001 |
| 815 | 829 | Chadwick | Landline | Essex Telcom, Inc. | 06/13/2000 |
| 815 | 830 | Oglesby | Wireless | New Cingular Wireless Pcs, Llc - Il | 09/11/1994 |
| 815 | 831 | Davis | Landline | Aero North Communications, Inc. - Il | 03/03/2001 |
| 815 | 832 | Saunemin | Landline | Frontier Communications Of Illinois, Inc. | 02/04/1994 |
| 815 | 833 | Winslow | Landline | Aero North Communications, Inc. - Il | 03/03/2001 |
| 815 | 833 | Lena | Landline | Aero North Communications, Inc. - Il | 03/03/2001 |
| 815 | 833 | Mc Connell | Landline | Aero North Communications, Inc. - Il | 03/03/2001 |
| 815 | 834 | Lockport | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 834 | Romeoville | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 835 | Dixon | Landline | Essex Telcom, Inc. | 06/13/2000 |
| 815 | 836 | Lockport | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 836 | Romeoville | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 837 | Forreston | Landline | Aero North Communications, Inc. - Il | 03/03/2001 |
| 815 | 838 | Lockport | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 838 | Romeoville | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 839 | Kankakee | Landline | Xo Illinois, Inc. | 06/30/2001 |
| 815 | 840 | Stockton | Landline | Aero North Communications, Inc. - Il | 03/03/2001 |
| 815 | 841 | Mount Morris | Landline | Essex Telcom, Inc. | 06/13/2000 |
| 815 | 842 | Pontiac | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 843 | Ashton | Landline | Essex Telcom, Inc. | 06/13/2000 |
| 815 | 844 | Pontiac | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 845 | Apple River | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 845 | Galena | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 845 | Scales Mound | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 846 | Joliet | Landline | Broadwing Communications, Llc - Il | 10/11/1997 |
| 815 | 846 | Joliet | Landline | Broadwing Communications, Llc - Il | 10/11/1997 |
| 815 | 846 | Joliet | Landline | Broadwing Communications, Llc - Il | 10/11/1997 |
| 815 | 847 | Rockford | Landline | At&t Corp. | 04/18/2005 |
| 815 | 847 | Rockford | Landline | At&t Corp. | 04/18/2005 |
| 815 | 847 | Rockford | Landline | At&t Corp. | 04/18/2005 |
| 815 | 848 | Pontiac | Wireless | Illinois Valley Cellular Rsa 2-i Partnership | 02/04/1994 |
| 815 | 849 | Sublette | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 850 | Pecatonica | Landline | Aero North Communications, Inc. - Il | 03/03/2001 |
| 815 | 850 | German Valley | Landline | Aero North Communications, Inc. - Il | 03/03/2001 |
| 815 | 850 | Winnebago | Landline | Aero North Communications, Inc. - Il | 03/03/2001 |
| 815 | 851 | Kankakee | Wireless | Usa Mobility Wireless, Inc. | 09/11/1994 |
| 815 | 851 | Bourbonnais | Wireless | Usa Mobility Wireless, Inc. | 09/11/1994 |
| 815 | 851 | Bradley | Wireless | Usa Mobility Wireless, Inc. | 09/11/1994 |
| 815 | 852 | Apple River | Landline | Aero North Communications, Inc. - Il | 03/03/2001 |
| 815 | 852 | Galena | Landline | Aero North Communications, Inc. - Il | 03/03/2001 |
| 815 | 852 | Scales Mound | Landline | Aero North Communications, Inc. - Il | 03/03/2001 |
| 815 | 853 | Wenona | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 854 | Long Point | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 855 | Milledgeville | Landline | Mediacom Telephony Of Illinois, Llc - Il | 04/21/2006 |
| 815 | 856 | Tonica | Landline | Leonore Mutual Telephone Co. | 02/04/1994 |
| 815 | 856 | Lostant | Landline | Leonore Mutual Telephone Co. | 02/04/1994 |
| 815 | 856 | Oglesby | Landline | Leonore Mutual Telephone Co. | 02/04/1994 |
| 815 | 857 | Amboy | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 858 | Elizabeth | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 859 | Dixon | Landline | Essex Telcom, Inc. | 06/13/2000 |
| 815 | 859 | Sterling | Landline | Essex Telcom, Inc. | 06/13/2000 |
| 815 | 859 | Rock Falls | Landline | Essex Telcom, Inc. | 06/13/2000 |
| 815 | 860 | Elwood | Landline | Teleport Communications America, Llc - Il | 03/05/2010 |
| 815 | 861 | Woodstock | Wireless | New Cingular Wireless Pcs, Llc - Il | 07/04/1995 |
| 815 | 861 | Union | Wireless | New Cingular Wireless Pcs, Llc - Il | 07/04/1995 |
| 815 | 861 | Wonder Lake | Wireless | New Cingular Wireless Pcs, Llc - Il | 07/04/1995 |
| 815 | 862 | Capron | Landline | Charter Fiberlink - Illinois, Llc - Il | 11/18/2008 |
| 815 | 862 | Harvard | Landline | Charter Fiberlink - Illinois, Llc - Il | 11/18/2008 |
| 815 | 862 | Hebron | Landline | Charter Fiberlink - Illinois, Llc - Il | 11/18/2008 |
| 815 | 863 | Rutland | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 864 | Shannon | Landline | Citizens Telecom Co Illinois-frontier Citizens -il | 02/04/1994 |
| 815 | 865 | Davis | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 866 | Princeton | Wireless | Illinois Valley Cellular Rsa 2-i Partnership | 02/04/1994 |
| 815 | 867 | Pontiac | Wireless | Sprint Spectrum L.p. | 04/27/2001 |
| 815 | 868 | Winslow | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 868 | Lena | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 868 | Mc Connell | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 869 | Magnolia | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 870 | Rockford | Wireless | Usa Mobility Wireless, Inc. | 07/04/1995 |
| 815 | 870 | Rockford | Wireless | Usa Mobility Wireless, Inc. | 07/04/1995 |
| 815 | 870 | Rockford | Wireless | Usa Mobility Wireless, Inc. | 07/04/1995 |
| 815 | 871 | Rockford | Wireless | United States Cellular Corp. - Illinois | 01/10/1996 |
| 815 | 871 | Rockford | Wireless | United States Cellular Corp. - Illinois | 01/10/1996 |
| 815 | 871 | Rockford | Wireless | United States Cellular Corp. - Illinois | 01/10/1996 |
| 815 | 872 | Princeton | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 873 | Rockford | Landline | Frontier North, Inc. - Il | 04/01/1997 |
| 815 | 874 | Rockford | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 875 | Princeton | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 876 | Princeton | Landline | Frontier North, Inc. - Il | 10/11/1997 |
| 815 | 877 | Loves Park | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 878 | Princeton | Wireless | New Cingular Wireless Pcs, Llc - Il | 02/04/1994 |
| 815 | 879 | Princeton | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 880 | Woodstock | Landline | Xo Illinois, Inc. | 01/24/2001 |
| 815 | 881 | Oregon | Landline | Essex Telcom, Inc. | 06/13/2000 |
| 815 | 882 | Mc Nabb | Landline | Mcnabb Telephone Co. | 02/04/1994 |
| 815 | 882 | Magnolia | Landline | Mcnabb Telephone Co. | 02/04/1994 |
| 815 | 882 | Hennepin | Landline | Mcnabb Telephone Co. | 02/04/1994 |
| 815 | 883 | Oglesby | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 884 | Harvard | Landline | Mediacom Telephony Of Illinois, Llc - Il | 03/23/2010 |
| 815 | 885 | Rockford | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 885 | Loves Park | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 885 | Caledonia | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 886 | Lockport | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 886 | Romeoville | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 887 | Harvard | Landline | Teleport Communications America, Llc - Il | 05/03/2002 |
| 815 | 888 | Rochelle | Landline | Level 3 Communications, Llc - Il | 11/27/2006 |
| 815 | 889 | Milford | Landline | Frontier Communications Of The Carolinas, Inc - Il | 02/04/1994 |
| 815 | 890 | Rockford | Landline | Aero North Communications, Inc. - Il | 05/27/2003 |
| 815 | 891 | Winnebago | Landline | Aero North Communications, Inc. - Il | 06/25/2001 |
| 815 | 892 | Shannon | Landline | Essex Telcom, Inc. | 06/13/2000 |
| 815 | 893 | Crystal Lake | Landline | Comcast Phone Of Illinois, Llc Dba Comco - Il | 12/30/2004 |
| 815 | 893 | Crystal Lake | Landline | Comcast Phone Of Illinois, Llc Dba Comco - Il | 12/30/2004 |
| 815 | 894 | Ladd | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 895 | Sycamore | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 896 | Durand | Landline | Aero North Communications, Inc. - Il | 07/24/2001 |
| 815 | 896 | South Beloit | Landline | Aero North Communications, Inc. - Il | 07/24/2001 |
| 815 | 896 | Rockton | Landline | Aero North Communications, Inc. - Il | 07/24/2001 |
| 815 | 897 | Lyndon | Landline | Mediacom Telephony Of Illinois, Llc - Il | 06/01/2006 |
| 815 | 898 | Hanover | Landline | Aero North Communications, Inc. - Il | 02/23/2001 |
| 815 | 898 | Elizabeth | Landline | Aero North Communications, Inc. - Il | 02/23/2001 |
| 815 | 898 | Stockton | Landline | Aero North Communications, Inc. - Il | 02/23/2001 |
| 815 | 899 | Sycamore | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 900 | Amboy | Landline | New Cingular Wireless Pcs, Llc - Il | 08/04/2010 |
| 815 | 901 | Dekalb | Landline | Comcast Phone Of Illinois, Llc Dba Comco - Il | 02/14/2005 |
| 815 | 902 | Lyndon | Landline | Mediacom Telephony Of Illinois, Llc - Il | 03/27/2005 |
| 815 | 903 | Mchenry | Wireless | American Messaging Services, Llc | 02/27/2002 |
| 815 | 904 | Rockford | Wireless | New Cingular Wireless Pcs, Llc - Il | 08/31/2006 |
| 815 | 904 | Rockford | Wireless | New Cingular Wireless Pcs, Llc - Il | 08/31/2006 |
| 815 | 904 | Rockford | Wireless | New Cingular Wireless Pcs, Llc - Il | 08/31/2006 |
| 815 | 905 | Lockport | Landline | Level 3 Communications, Llc - Il | 02/27/2002 |
| 815 | 905 | Romeoville | Landline | Level 3 Communications, Llc - Il | 02/27/2002 |
| 815 | 906 | Mount Carroll | Landline | Mediacom Telephony Of Illinois, Llc - Il | 04/21/2006 |
| 815 | 907 | Manteno | Landline | Broadwing Communications, Llc - Il | 12/06/2001 |
| 815 | 908 | Freeport | Wireless | Cellco Partnership Dba Verizon Wireless - Il | 02/09/2003 |
| 815 | 909 | Dekalb | Landline | T-mobile Usa, Inc. | 10/31/2001 |
| 815 | 910 | Mendota | Wireless | Illinois Valley Cellular Rsa 2-i Partnership | 06/25/2001 |
| 815 | 912 | Belvidere | Landline | Aero North Communications, Inc. - Il | 09/28/2001 |
| 815 | 913 | Joliet | Landline | Centurylink Communications Llc | 06/30/2001 |
| 815 | 913 | Joliet | Landline | Centurylink Communications Llc | 06/30/2001 |
| 815 | 913 | Joliet | Landline | Centurylink Communications Llc | 06/30/2001 |
| 815 | 914 | Rockford | Wireless | Sprint Spectrum L.p. | 06/30/2001 |
| 815 | 914 | Rockford | Wireless | Sprint Spectrum L.p. | 06/30/2001 |
| 815 | 914 | Rockford | Wireless | Sprint Spectrum L.p. | 06/30/2001 |
| 815 | 915 | Coal City | Landline | Level 3 Communications, Llc - Il | 12/28/2001 |
| 815 | 916 | Yorkville | Wireless | Broadvox-clec, Llc - Il | 10/13/2005 |
| 815 | 916 | Newark | Wireless | Broadvox-clec, Llc - Il | 10/13/2005 |
| 815 | 916 | Minooka | Wireless | Broadvox-clec, Llc - Il | 10/13/2005 |
| 815 | 917 | Rochelle | Landline | Essex Telcom, Inc. | 06/13/2000 |
| 815 | 918 | Clifton | Landline | Level 3 Communications, Llc - Il | 08/22/2001 |
| 815 | 919 | Joliet | Wireless | T-mobile Usa, Inc. | 02/23/2001 |
| 815 | 919 | Joliet | Wireless | T-mobile Usa, Inc. | 02/23/2001 |
| 815 | 919 | Joliet | Wireless | T-mobile Usa, Inc. | 02/23/2001 |
| 815 | 920 | Cornell | Landline | Mediacom Telephony Of Illinois, Llc - Il | 06/01/2006 |
| 815 | 921 | Rockford | Landline | Ameritech Illinois | 04/27/2001 |
| 815 | 921 | Rockford | Landline | Ameritech Illinois | 04/27/2001 |
| 815 | 921 | Rockford | Landline | Ameritech Illinois | 04/27/2001 |
| 815 | 922 | Kankakee | Wireless | Cellco Partnership Dba Verizon Wireless - Il | 02/04/1994 |
| 815 | 922 | Bourbonnais | Wireless | Cellco Partnership Dba Verizon Wireless - Il | 02/04/1994 |
| 815 | 922 | Bradley | Wireless | Cellco Partnership Dba Verizon Wireless - Il | 02/04/1994 |
| 815 | 923 | Union | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 924 | Prophetstown | Landline | Essex Telcom, Inc. | 06/13/2000 |
| 815 | 925 | Hennepin | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 926 | Wilmington | Landline | Broadwing Communications, Llc - Il | 05/22/2001 |
| 815 | 927 | Joliet | Landline | Broadwing Communications, Llc - Il | 10/13/1999 |
| 815 | 927 | Joliet | Landline | Broadwing Communications, Llc - Il | 10/13/1999 |
| 815 | 927 | Joliet | Landline | Broadwing Communications, Llc - Il | 10/13/1999 |
| 815 | 928 | Kankakee | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 929 | Kankakee | Landline | Ameritech Illinois | 07/06/1997 |
| 815 | 930 | Elizabeth | Landline | Mediacom Telephony Of Illinois, Llc - Il | 03/27/2005 |
| 815 | 931 | Joliet | Wireless | New Cingular Wireless Pcs, Llc - Il | 07/04/1995 |
| 815 | 931 | Joliet | Wireless | New Cingular Wireless Pcs, Llc - Il | 07/04/1995 |
| 815 | 931 | Joliet | Wireless | New Cingular Wireless Pcs, Llc - Il | 07/04/1995 |
| 815 | 932 | Kankakee | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 933 | Kankakee | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 934 | Emington | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 935 | Kankakee | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 936 | Kankakee | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 937 | Kankakee | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 938 | Forreston | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 939 | Kankakee | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 940 | Gardner | Landline | Level 3 Communications, Llc - Il | 05/03/2002 |
| 815 | 941 | Morris | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 942 | Morris | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 943 | Harvard | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 944 | Saint Anne | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 944 | Momence | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 944 | Beaverville | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 945 | Chenoa | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 946 | Polo | Landline | Citizens Telecom Co Illinois-frontier Citizens -il | 02/04/1994 |
| 815 | 947 | Stockton | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 948 | Annawan | Landline | Citizens Telecom Co Illinois-frontier Citizens -il | 02/04/1994 |
| 815 | 948 | Atkinson | Landline | Citizens Telecom Co Illinois-frontier Citizens -il | 02/04/1994 |
| 815 | 948 | Prophetstown | Landline | Citizens Telecom Co Illinois-frontier Citizens -il | 02/04/1994 |
| 815 | 949 | Cabery | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 951 | Amboy | Landline | Essex Telcom, Inc. | 06/13/2000 |
| 815 | 952 | Lanark | Landline | Aero North Communications, Inc. - Il | 07/18/2006 |
| 815 | 953 | Kankakee | Wireless | Cellco Partnership Dba Verizon Wireless - Il | 02/04/1994 |
| 815 | 953 | Bourbonnais | Wireless | Cellco Partnership Dba Verizon Wireless - Il | 02/04/1994 |
| 815 | 953 | Bradley | Wireless | Cellco Partnership Dba Verizon Wireless - Il | 02/04/1994 |
| 815 | 954 | Kankakee | Wireless | Cellco Partnership Dba Verizon Wireless - Il | 02/11/1995 |
| 815 | 954 | Bourbonnais | Wireless | Cellco Partnership Dba Verizon Wireless - Il | 02/11/1995 |
| 815 | 954 | Bradley | Wireless | Cellco Partnership Dba Verizon Wireless - Il | 02/11/1995 |
| 815 | 955 | Joliet | Wireless | Sprint Spectrum L.p. | 07/05/2002 |
| 815 | 955 | Joliet | Wireless | Sprint Spectrum L.p. | 07/05/2002 |
| 815 | 955 | Joliet | Wireless | Sprint Spectrum L.p. | 07/05/2002 |
| 815 | 956 | Morrison | Landline | Citizens Telecom Co Illinois-frontier Citizens -il | 06/01/2006 |
| 815 | 957 | Rockton | Landline | Level 3 Communications, Llc - Il | 02/22/2005 |
| 815 | 960 | Leaf River | Landline | North County Communications Corp. - Ca | 06/04/2002 |
| 815 | 961 | Rockford | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 961 | Rockford | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 961 | Rockford | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 962 | Rockford | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 962 | Rockford | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 962 | Rockford | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 963 | Rockford | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 963 | Rockford | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 963 | Rockford | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 964 | Rockford | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 964 | Rockford | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 964 | Rockford | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 965 | Rockford | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 965 | Rockford | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 965 | Rockford | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 966 | Rockford | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 966 | Rockford | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 966 | Rockford | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 967 | Rockford | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 967 | Rockford | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 967 | Rockford | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 968 | Rockford | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 968 | Rockford | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 968 | Rockford | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 969 | Rockford | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 969 | Rockford | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 969 | Rockford | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 970 | Sycamore | Wireless | Sprint Spectrum L.p. | 07/05/2002 |
| 815 | 971 | Rockford | Landline | Ameritech Illinois | 04/15/1996 |
| 815 | 971 | Rockford | Landline | Ameritech Illinois | 04/15/1996 |
| 815 | 971 | Rockford | Landline | Ameritech Illinois | 04/15/1996 |
| 815 | 972 | Rockford | Landline | Ameritech Illinois | 07/01/1996 |
| 815 | 972 | Rockford | Landline | Ameritech Illinois | 07/01/1996 |
| 815 | 972 | Rockford | Landline | Ameritech Illinois | 07/01/1996 |
| 815 | 973 | Dixon | Wireless | United States Cellular Corp. - Illinois | 01/14/2000 |
| 815 | 974 | Annawan | Landline | Essex Telcom, Inc. | 06/13/2000 |
| 815 | 974 | Mineral | Landline | Essex Telcom, Inc. | 06/13/2000 |
| 815 | 974 | Tampico | Landline | Essex Telcom, Inc. | 06/13/2000 |
| 815 | 975 | Belvidere | Wireless | New Cingular Wireless Pcs, Llc - Il | 09/03/2002 |
| 815 | 977 | Rockford | Landline | Mci Worldcom Communications, Inc. - Il | 06/25/2003 |
| 815 | 977 | Rockford | Landline | Mci Worldcom Communications, Inc. - Il | 06/25/2003 |
| 815 | 977 | Rockford | Landline | Mci Worldcom Communications, Inc. - Il | 06/25/2003 |
| 815 | 978 | Rockford | Wireless | Cellco Partnership Dba Verizon Wireless - Il | 07/04/1995 |
| 815 | 978 | Rockford | Wireless | Cellco Partnership Dba Verizon Wireless - Il | 07/04/1995 |
| 815 | 978 | Rockford | Wireless | Cellco Partnership Dba Verizon Wireless - Il | 07/04/1995 |
| 815 | 979 | Rockford | Wireless | Cellco Partnership Dba Verizon Wireless - Il | 04/01/1997 |
| 815 | 979 | Rockford | Wireless | Cellco Partnership Dba Verizon Wireless - Il | 04/01/1997 |
| 815 | 979 | Rockford | Wireless | Cellco Partnership Dba Verizon Wireless - Il | 04/01/1997 |
| 815 | 980 | Rockford | Wireless | Cellco Partnership Dba Verizon Wireless - Il | 06/15/2006 |
| 815 | 980 | Rockford | Wireless | Cellco Partnership Dba Verizon Wireless - Il | 06/15/2006 |
| 815 | 980 | Rockford | Wireless | Cellco Partnership Dba Verizon Wireless - Il | 06/15/2006 |
| 815 | 981 | Ottawa | Landline | Level 3 Communications, Llc - Il | 09/30/2002 |
| 815 | 982 | Tampico | Landline | Essex Telcom, Inc. | 06/13/2000 |
| 815 | 983 | Rockford | Wireless | American Messaging Services, Llc | 02/04/1994 |
| 815 | 983 | Rockford | Wireless | American Messaging Services, Llc | 02/04/1994 |
| 815 | 983 | Rockford | Wireless | American Messaging Services, Llc | 02/04/1994 |
| 815 | 984 | Wellington | Landline | Frontier Communications Of The Carolinas, Inc - Il | 02/04/1994 |
| 815 | 985 | Rockford | Wireless | Cellco Partnership Dba Verizon Wireless - Il | 02/04/1994 |
| 815 | 985 | Rockford | Wireless | Cellco Partnership Dba Verizon Wireless - Il | 02/04/1994 |
| 815 | 985 | Rockford | Wireless | Cellco Partnership Dba Verizon Wireless - Il | 02/04/1994 |
| 815 | 986 | Rockford | Wireless | Us Xchange Of Illinois Llc Dba Choice One Comm Il | 02/27/1999 |
| 815 | 986 | Rockford | Wireless | Us Xchange Of Illinois Llc Dba Choice One Comm Il | 02/27/1999 |
| 815 | 986 | Rockford | Wireless | Us Xchange Of Illinois Llc Dba Choice One Comm Il | 02/27/1999 |
| 815 | 987 | Rockford | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 987 | Rockford | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 987 | Rockford | Landline | Ameritech Illinois | 02/04/1994 |
| 815 | 988 | Rockford | Wireless | United States Cellular Corp. - Illinois | 02/04/1994 |
| 815 | 988 | Rockford | Wireless | United States Cellular Corp. - Illinois | 02/04/1994 |
| 815 | 988 | Rockford | Wireless | United States Cellular Corp. - Illinois | 02/04/1994 |
| 815 | 989 | Prophetstown | Landline | Mediacom Telephony Of Illinois, Llc - Il | 03/27/2005 |
| 815 | 990 | Freeport | Wireless | Cellco Partnership Dba Verizon Wireless - Il | 10/22/2002 |
| 815 | 991 | Sycamore | Landline | Essex Telcom, Inc. | 06/13/2000 |
| 815 | 992 | Streator | Wireless | Sprint Spectrum L.p. | 04/21/2005 |
| 815 | 993 | Oglesby | Wireless | New Cingular Wireless Pcs, Llc - Il | 09/22/2006 |
| 815 | 994 | Dixon | Wireless | Sprint Spectrum L.p. | 04/14/2003 |
| 815 | 995 | Dekalb | Landline | Teleport Communications America, Llc - Il | 06/10/2009 |
| 815 | 996 | Savanna | Wireless | Sprint Spectrum L.p. | 07/18/2006 |
| 815 | 997 | Rockford | Landline | Mcleodusa Telecommunications Services, Inc.- Il | 03/26/2003 |
| 815 | 997 | Rockford | Landline | Mcleodusa Telecommunications Services, Inc.- Il | 03/26/2003 |
| 815 | 997 | Rockford | Landline | Mcleodusa Telecommunications Services, Inc.- Il | 03/26/2003 |
| 815 | 998 | Odell | Landline | Frontier North, Inc. - Il | 02/04/1994 |
| 815 | 999 | Joliet | Landline | Sprint Spectrum L.p. | 11/11/2003 |
| 815 | 999 | Joliet | Landline | Sprint Spectrum L.p. | 11/11/2003 |
| 815 | 999 | Joliet | Landline | Sprint Spectrum L.p. | 11/11/2003 |
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