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The city of Chevy Chase is in the state of Maryland. It has the following active area codes:
| NPA | NXX | Usage | Company Name | NXX Introduced Date |
|---|---|---|---|---|
| 301 | 202 | Wireless | New Cingular Wireless Pcs, Llc - Dc | 12/19/2008 |
| 240 | 204 | Wireless | Cellco Partnership Dba Verizon Wireless - Md | 09/07/2011 |
| 301 | 204 | Wireless | New Cingular Wireless Pcs, Llc - Dc | 04/15/1996 |
| 301 | 215 | Landline | Verizon Maryland, Inc. | 02/04/1994 |
| 301 | 219 | Wireless | New Cingular Wireless Pcs, Llc - Dc | 07/04/1995 |
| 301 | 221 | Wireless | New Cingular Wireless Pcs, Llc - Dc | 09/11/1994 |
| 301 | 222 | Landline | Cavalier Telephone Mid-atlantic, Llc - Md | 10/11/1997 |
| 301 | 224 | Wireless | Usa Mobility Wireless, Inc. | 04/15/1996 |
| 240 | 235 | Landline | Paetec Communications, Inc. - Md | 10/13/1999 |
| 240 | 241 | Landline | Starpower Communications, Llc - Md | 02/27/1999 |
| 240 | 242 | Landline | Starpower Communications, Llc - Md | 02/27/1999 |
| 301 | 243 | Landline | Verizon Maryland, Inc. | 07/20/2006 |
| 240 | 244 | Landline | Starpower Communications, Llc - Md | 02/27/1999 |
| 240 | 263 | Wireless | Sprint Spectrum L.p. | 11/10/2011 |
| 240 | 265 | Wireless | Sprint Spectrum L.p. | 11/10/2011 |
| 240 | 271 | Wireless | New Cingular Wireless Pcs, Llc - Dc | 02/27/1999 |
| 301 | 272 | Landline | Mci Worldcom Communications, Inc. - Md | 01/11/1997 |
| 240 | 272 | Wireless | Sprint Spectrum L.p. | 11/10/2011 |
| 240 | 274 | Wireless | New Cingular Wireless Pcs, Llc - Dc | 02/27/1999 |
| 301 | 275 | Wireless | New Cingular Wireless Pcs, Llc - Dc | 02/11/1995 |
| 240 | 277 | Wireless | Sprint Spectrum L.p. | 10/18/2002 |
| 301 | 280 | Landline | Verizon Maryland, Inc. | 10/11/1997 |
| 240 | 281 | Wireless | New Cingular Wireless Pcs, Llc - Dc | 10/13/1999 |
| 240 | 286 | Wireless | Sprint Spectrum L.p. | 09/17/2002 |
| 301 | 300 | Wireless | Cellco Partnership Dba Verizon Wireless - Md | 03/30/2007 |
| 301 | 312 | Wireless | New Cingular Wireless Pcs, Llc - Dc | 10/11/1997 |
| 240 | 316 | Wireless | Sprint Spectrum L.p. | 12/31/1969 |
| 301 | 318 | Wireless | New Cingular Wireless Pcs, Llc - Dc | 02/04/1994 |
| 301 | 328 | Landline | Comcast Phone Of Northern Maryland, Inc. - Md | 06/21/2006 |
| 301 | 335 | Wireless | New Cingular Wireless Pcs, Llc - Dc | 09/11/1994 |
| 240 | 336 | Landline | Core Communications, Inc. - Md | 10/31/2000 |
| 240 | 340 | Wireless | Sprint Spectrum L.p. | 08/18/2011 |
| 301 | 347 | Landline | Verizon Maryland, Inc. | 10/15/1996 |
| 240 | 370 | Wireless | Sprint Spectrum L.p. | 12/14/2007 |
| 240 | 383 | Wireless | New Cingular Wireless Pcs, Llc - Dc | 08/20/2000 |
| 301 | 385 | Wireless | New Cingular Wireless Pcs, Llc - Dc | 04/01/1997 |
| 240 | 387 | Landline | Cavalier East Llc - Md | 01/14/2000 |
| 240 | 395 | Landline | Cavalier Telephone Mid-atlantic, Llc - Md | 08/20/2000 |
| 240 | 396 | Landline | Global Crossing Local Services, Inc.-md | 02/27/1999 |
| 240 | 399 | Landline | Xo Maryland, Llc | 10/13/1999 |
| 240 | 400 | Wireless | Sprint Spectrum L.p. | 08/18/2011 |
| 301 | 402 | Landline | Verizon Maryland, Inc. | 02/04/1994 |
| 301 | 406 | Wireless | Usa Mobility Wireless, Inc. | 02/04/1994 |
| 301 | 412 | Wireless | New Cingular Wireless Pcs, Llc - Dc | 02/04/1994 |
| 240 | 426 | Wireless | Sprint Spectrum L.p. | 10/25/2001 |
| 301 | 435 | Landline | Verizon Maryland, Inc. | 07/04/1995 |
| 240 | 445 | Wireless | Sprint Spectrum L.p. | 11/10/2011 |
| 301 | 451 | Landline | Verizon Maryland, Inc. | 05/10/1999 |
| 240 | 464 | Landline | Sprint Spectrum L.p. | 05/10/1999 |
| 240 | 480 | Wireless | Sprint Spectrum L.p. | 09/27/2010 |
| 301 | 480 | Landline | Verizon Maryland, Inc. | 02/04/1994 |
| 301 | 492 | Landline | Verizon Maryland, Inc. | 02/04/1994 |
| 301 | 496 | Landline | Verizon Maryland, Inc. | 02/04/1994 |
| 240 | 497 | Landline | Verizon Maryland, Inc. | 10/31/2000 |
| 301 | 500 | Landline | Xo Maryland, Llc | 09/01/2010 |
| 301 | 503 | Wireless | New Cingular Wireless Pcs, Llc - Dc | 02/04/1994 |
| 240 | 515 | Wireless | New Cingular Wireless Pcs, Llc - Dc | 06/20/2001 |
| 240 | 519 | Wireless | Sprint Spectrum L.p. | 11/10/2011 |
| 240 | 534 | Wireless | Cellco Partnership Dba Verizon Wireless - Md | 04/11/2016 |
| 301 | 538 | Wireless | New Cingular Wireless Pcs, Llc - Dc | 02/11/1995 |
| 240 | 541 | Wireless | Sprint Spectrum L.p. | 10/31/2011 |
| 240 | 543 | Wireless | Sprint Spectrum L.p. | 07/25/2006 |
| 301 | 554 | Wireless | Usa Mobility Wireless, Inc. | 05/18/1998 |
| 240 | 560 | Landline | Xo Maryland, Llc | 04/23/2001 |
| 301 | 594 | Landline | Verizon Maryland, Inc. | 02/04/1994 |
| 240 | 595 | Wireless | Cellco Partnership Dba Verizon Wireless - Md | 09/13/2006 |
| 240 | 619 | Landline | Mci Worldcom Communications, Inc. - Md | 08/20/2000 |
| 301 | 633 | Wireless | New Cingular Wireless Pcs, Llc - Dc | 02/11/1995 |
| 301 | 642 | Wireless | New Cingular Wireless Pcs, Llc - Dc | 01/25/1998 |
| 240 | 644 | Landline | Xo Maryland, Llc | 10/31/2000 |
| 240 | 645 | Landline | Xo Maryland, Llc | 10/31/2000 |
| 301 | 646 | Wireless | New Cingular Wireless Pcs, Llc - Dc | 01/10/1996 |
| 301 | 648 | Wireless | New Cingular Wireless Pcs, Llc - Dc | 02/04/1994 |
| 301 | 652 | Landline | Verizon Maryland, Inc. | 02/04/1994 |
| 301 | 654 | Landline | Verizon Maryland, Inc. | 02/04/1994 |
| 301 | 655 | Wireless | New Cingular Wireless Pcs, Llc - Dc | 04/15/1996 |
| 301 | 656 | Landline | Verizon Maryland, Inc. | 02/04/1994 |
| 301 | 657 | Landline | Verizon Maryland, Inc. | 02/04/1994 |
| 301 | 661 | Wireless | New Cingular Wireless Pcs, Llc - Dc | 09/11/1994 |
| 301 | 664 | Landline | Verizon Maryland, Inc. | 01/10/1996 |
| 301 | 674 | Wireless | Sprint Spectrum L.p. | 11/20/1998 |
| 240 | 705 | Wireless | New Cingular Wireless Pcs, Llc - Dc | 03/25/2009 |
| 240 | 706 | Wireless | New Cingular Wireless Pcs, Llc - Dc | 03/26/2009 |
| 301 | 718 | Landline | Verizon Maryland, Inc. | 02/04/1994 |
| 301 | 742 | Wireless | New Cingular Wireless Pcs, Llc - Dc | 02/04/1994 |
| 240 | 752 | Landline | Telcove Operations, Inc. - Md | 08/20/2000 |
| 301 | 760 | Landline | Level 3 Communications, Llc - Md | 02/27/2002 |
| 240 | 764 | Landline | Xo Maryland, Llc | 10/31/2000 |
| 240 | 765 | Landline | Xo Maryland, Llc | 10/31/2000 |
| 240 | 766 | Landline | Xo Maryland, Llc | 10/31/2000 |
| 301 | 771 | Wireless | Verizon Maryland, Inc. | 04/01/1997 |
| 240 | 778 | Landline | Xo Maryland, Llc | 10/31/2000 |
| 240 | 783 | Wireless | Mte, Inc. Dba Mte Paging Network | 05/10/1999 |
| 240 | 800 | Landline | Core Communications, Inc. - Md | 06/22/2012 |
| 301 | 813 | Landline | Baltimore-washington Telephone (bwt) | 06/30/2001 |
| 301 | 814 | Wireless | New Cingular Wireless Pcs, Llc - Dc | 02/04/1994 |
| 301 | 827 | Landline | Verizon Maryland, Inc. | 02/04/1994 |
| 301 | 828 | Landline | At&t Local | 08/14/1998 |
| 240 | 832 | Wireless | Sprint Spectrum L.p. | 05/10/1999 |
| 301 | 832 | Landline | At&t Local | 08/14/1998 |
| 240 | 833 | Landline | Xo Maryland, Llc | 10/31/2000 |
| 240 | 839 | Wireless | Cellco Partnership Dba Verizon Wireless - Md | 01/13/2007 |
| 240 | 845 | Landline | Xo Maryland, Llc | 10/31/2000 |
| 240 | 858 | Wireless | Cellco Partnership Dba Verizon Wireless - Md | 07/12/2016 |
| 240 | 876 | Wireless | Sprint Spectrum L.p. | 11/20/1998 |
| 240 | 880 | Landline | Broadwing Communications. Llc - Md | 07/22/1999 |
| 240 | 899 | Wireless | Omnipoint Communications Cap Operations, Llc | 03/13/2001 |
| 301 | 906 | Wireless | New Cingular Wireless Pcs, Llc - Dc | 10/15/1996 |
| 301 | 907 | Landline | Verizon Maryland, Inc. | 05/18/1998 |
| 301 | 910 | Wireless | New Cingular Wireless Pcs, Llc - Dc | 02/04/1994 |
| 301 | 913 | Landline | Verizon Maryland, Inc. | 02/04/1994 |
| 301 | 915 | Landline | Starpower Communications, Llc - Md | 11/20/1998 |
| 301 | 919 | Wireless | New Cingular Wireless Pcs, Llc - Dc | 02/04/1994 |
| 301 | 941 | Landline | Verizon Maryland, Inc. | 02/11/1995 |
| 301 | 951 | Landline | Verizon Maryland, Inc. | 02/04/1994 |
| 301 | 961 | Landline | Verizon Maryland, Inc. | 02/04/1994 |
| 301 | 968 | Landline | Mci Worldcom Communications, Inc. - Md | 07/04/1995 |
| 301 | 986 | Landline | Verizon Maryland, Inc. | 02/04/1994 |
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