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The city of San Ramon is in the state of California. It has the following active area codes:
NPA | NXX | Usage | Company Name | NXX Introduced Date |
---|---|---|---|---|
925 | 216 | Wireless | New Cingular Wireless Pcs, Llc | 11/20/1998 |
925 | 230 | Landline | Level 3 Communications, Llc - Ca | 10/13/1999 |
925 | 236 | Landline | Broadwing Communications, Llc - Ca | 03/03/2001 |
925 | 241 | Landline | Mcimetro Access Transmission Services Llc | 05/18/1998 |
925 | 242 | Landline | Pacific Bell | 05/10/1999 |
925 | 244 | Landline | Pacific Bell | 05/18/1998 |
925 | 248 | Landline | Pacific Bell | 05/18/1998 |
925 | 275 | Landline | Pacific Bell | 05/18/1998 |
925 | 277 | Landline | Pacific Bell | 05/18/1998 |
925 | 302 | Landline | Level 3 Telecom Of California, Lp - Ca | 05/10/1999 |
925 | 307 | Landline | Level 3 Telecom Of California, Lp - Ca | 05/10/1999 |
925 | 327 | Landline | Pacific Bell | 05/18/1998 |
925 | 328 | Landline | Pacific Bell | 05/18/1998 |
925 | 336 | Wireless | New Cingular Wireless Pcs, Llc | 12/28/2001 |
925 | 355 | Landline | Pacific Bell | 05/18/1998 |
925 | 358 | Landline | Pacific Bell | 05/18/1998 |
925 | 359 | Landline | Mcimetro Access Transmission Services Llc | 05/18/1998 |
925 | 361 | Landline | Teleport Communications Group - San Francisco | 07/22/1999 |
925 | 365 | Landline | Teleport Communications Group - San Francisco | 08/14/1998 |
925 | 380 | Landline | Level 3 Communications, Llc - Ca | 06/30/2001 |
925 | 394 | Landline | Global Crossing Local Services, Inc.-ca | 01/14/2000 |
925 | 404 | Landline | Allegiance Telecom, Inc. - Ca | 07/22/1999 |
925 | 413 | Wireless | New Cingular Wireless Pcs, Llc | 01/14/2000 |
925 | 415 | Landline | Broadwing Communications, Llc - Ca | 06/30/2001 |
925 | 419 | Wireless | American Messaging Services, Llc | 07/22/1999 |
925 | 452 | Landline | U.s. Telepacific Corp. - Ca | 08/20/2000 |
925 | 479 | Landline | Pacific Bell | 10/31/2000 |
925 | 480 | Landline | U.s. Telepacific Corp. - Ca | 05/18/1998 |
925 | 487 | Wireless | New Cingular Wireless Pcs, Llc | 06/13/2000 |
925 | 498 | Landline | U.s. Telepacific Corp. - Ca | 03/03/2001 |
925 | 509 | Wireless | Usa Mobility Wireless, Inc. | 11/20/1998 |
925 | 543 | Landline | Pacific Bell | 05/18/1998 |
925 | 548 | Wireless | New Cingular Wireless Pcs, Llc | 01/14/2000 |
925 | 549 | Wireless | New Cingular Wireless Pcs, Llc | 01/14/2000 |
925 | 551 | Landline | Pacific Bell | 05/18/1998 |
925 | 556 | Landline | Pacific Bell | 05/18/1998 |
925 | 557 | Landline | Mci Worldcom Communications, Inc., Ca | 05/18/1998 |
925 | 558 | Landline | Xo California, Inc. | 02/27/1999 |
925 | 560 | Landline | Pacific Bell | 05/18/1998 |
925 | 570 | Wireless | Sprint Spectrum L.p. | 05/10/1999 |
925 | 571 | Landline | North County Communications Corp. - Ca | 06/13/2000 |
925 | 574 | Landline | U.s. Telepacific Corp. - Ca | 06/27/2001 |
925 | 577 | Wireless | T-mobile Usa, Inc. | 09/19/2001 |
925 | 587 | Landline | Mpower Communications Corp - Ca | 06/13/2000 |
925 | 640 | Wireless | New Cingular Wireless Pcs, Llc | 02/27/1999 |
925 | 659 | Landline | Teleport Communications Group - San Francisco | 06/13/2000 |
925 | 719 | Wireless | Cellco Partnership Dba Verizon Wireless - Ca | 04/16/2002 |
925 | 762 | Landline | Pacific Bell | 02/27/1999 |
925 | 785 | Wireless | Cellco Partnership Dba Verizon Wireless - Ca | 05/10/1999 |
925 | 786 | Wireless | Cellco Partnership Dba Verizon Wireless - Ca | 05/10/1999 |
925 | 790 | Landline | Pacific Bell | 01/26/2001 |
925 | 803 | Landline | Pacific Bell | 05/18/1998 |
925 | 804 | Landline | Teleport Communications Group - San Francisco | 05/18/1998 |
925 | 806 | Landline | Pacific Bell | 05/18/1998 |
925 | 807 | Landline | Xo California, Inc. | 02/27/1999 |
925 | 819 | Wireless | New Cingular Wireless Pcs, Llc | 10/13/1999 |
925 | 823 | Landline | Pacific Bell | 05/18/1998 |
925 | 824 | Landline | Pacific Bell | 05/18/1998 |
925 | 828 | Landline | Pacific Bell | 05/18/1998 |
925 | 829 | Landline | Pacific Bell | 05/18/1998 |
925 | 830 | Landline | Pacific Bell | 05/18/1998 |
925 | 833 | Landline | Pacific Bell | 05/18/1998 |
925 | 842 | Landline | Pacific Bell | 05/18/1998 |
925 | 843 | Landline | Level 3 Telecom Of California, Lp - Ca | 05/20/2010 |
925 | 843 | Landline | Level 3 Telecom Of California, Lp - Ca | 05/20/2010 |
925 | 858 | Wireless | New Cingular Wireless Pcs, Llc | 02/27/1999 |
925 | 866 | Landline | Pacific Bell | 05/18/1998 |
925 | 867 | Landline | Pacific Bell | 05/18/1998 |
925 | 875 | Landline | Pacific Bell | 05/10/1999 |
925 | 884 | Landline | Matrix Telecom, Llc. Sii Tnci - Ca | 05/10/1999 |
925 | 895 | Wireless | Sprint Spectrum L.p. | 08/20/2000 |
925 | 901 | Landline | Pacific Bell | 05/18/1998 |
925 | 904 | Landline | Pacific Bell | 05/18/1998 |
925 | 905 | Landline | Matrix Telecom, Llc. Sii Tnci - Ca | 05/10/1999 |
925 | 913 | Wireless | T-mobile Usa, Inc. | 09/20/2002 |
925 | 967 | Landline | Pacific Bell | 05/10/1999 |
925 | 973 | Landline | Pacific Bell | 05/10/1999 |
925 | 997 | Wireless | New Cingular Wireless Pcs, Llc | 05/10/1999 |
925 | 999 | Landline | O1 Communications, Inc. - Ca | 05/10/1999 |
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