California
Area Codes List: 209, 213, 310, 323, 408, 415, 424, 442, 510, 530, 559, 562, 619, 626,
650, 657,661, 669, 707, 714, 747, 760, 805, 818, 831, 858, 909, 916, 925, 949, 951
| Prefix | City | Company | Type | Introduced |
| 925205 | Antioch, CA | American Messaging Services | Cell Number | 05/10/1999 |
| 925206 | Antioch, CA | Cellco Partnership DBA Verizon Wireless | Cell Number | 08/29/2007 |
| 925219 | Antioch, CA | Broadwing Communications | Landline | 05/10/1999 |
| 925234 | Antioch, CA | Level 3 Communications | Landline | 05/10/1999 |
| 925237 | Antioch, CA | Xo California | Landline | 07/22/1999 |
| 925238 | Antioch, CA | Comcast Phone Of California | Landline | 10/31/2008 |
| 925281 | Antioch, CA | Pac – West Telecomm | Landline | 05/10/1999 |
| 925301 | Antioch, CA | O1 Communications | Landline | 05/10/1999 |
| 925303 | Antioch, CA | Tw Telecom Of California Lp | Landline | 05/10/1999 |
| 925312 | Antioch, CA | Usa Mobility Wireless | Cell Number | 05/18/1998 |
| 925331 | Antioch, CA | U.s. Telepacific Corp. | Landline | 07/17/2001 |
| 925341 | Antioch, CA | American Messaging (am) | Cell Number | 06/13/2000 |
| 925342 | Antioch, CA | American Messaging (am) | Cell Number | 05/10/1999 |
| 925350 | Antioch, CA | Comcast Phone Of California | Landline | 09/13/2011 |
| 925354 | Antioch, CA | New Cingular Wireless PCS | Cell Number | 01/28/2002 |
| 925382 | Antioch, CA | Sprint Spectrum L.p. | Cell Number | 07/22/1999 |
| 925428 | Antioch, CA | T-mobile Usa | Cell Number | 04/19/2013 |
| 925437 | Antioch, CA | New Cingular Wireless PCS | Cell Number | 08/20/2000 |
| 925470 | Antioch, CA | Teleport Communications Group – San Francisco | Landline | 05/18/1998 |
| 925481 | Antioch, CA | New Cingular Wireless PCS | Cell Number | 03/24/2014 |
| 925522 | Antioch, CA | Pacific Bell | Landline | 10/13/1999 |
| 925529 | Antioch, CA | Cf Communications DBA Telekenex | Landline | 11/22/2010 |
| 925550 | Antioch, CA | New Cingular Wireless PCS | Cell Number | 02/27/1999 |
| 925565 | Antioch, CA | Metro PCS | Cell Number | 09/21/2001 |
| 925584 | Antioch, CA | Sprint Spectrum L.p. | Cell Number | 10/31/2000 |
| 925628 | Antioch, CA | Cellco Partnership DBA Verizon Wireless | Cell Number | 08/20/2000 |
| 925642 | Antioch, CA | New Cingular Wireless PCS | Cell Number | 03/03/2001 |
| 925706 | Antioch, CA | Pacific Bell | Landline | 05/18/1998 |
| 925727 | Antioch, CA | Mpower Communications Corp | Landline | 06/13/2000 |
| 925732 | Antioch, CA | Cf Communications DBA Telekenex | Landline | 11/02/2011 |
| 925752 | Antioch, CA | Mcimetro Access Transmission Services LLC | Landline | 05/18/1998 |
| 925753 | Antioch, CA | Pacific Bell | Landline | 05/18/1998 |
| 925754 | Antioch, CA | Pacific Bell | Landline | 05/18/1998 |
| 925755 | Antioch, CA | Pacific Bell | Landline | 08/14/1998 |
| 925756 | Antioch, CA | Pacific Bell | Landline | 05/18/1998 |
| 925757 | Antioch, CA | Pacific Bell | Landline | 05/18/1998 |
| 925759 | Antioch, CA | New Cingular Wireless PCS | Cell Number | 06/13/2000 |
| 925775 | Antioch, CA | Pac – West Telecomm | Landline | 05/18/1998 |
| 925776 | Antioch, CA | Pacific Bell | Landline | 05/18/1998 |
| 925777 | Antioch, CA | Pacific Bell | Landline | 05/18/1998 |
| 925778 | Antioch, CA | Pacific Bell | Landline | 05/18/1998 |
| 925779 | Antioch, CA | Pacific Bell | Landline | 05/18/1998 |
| 925783 | Antioch, CA | Cellco Partnership DBA Verizon Wireless | Cell Number | 05/10/1999 |
| 925813 | Antioch, CA | Cellco Partnership DBA Verizon Wireless | Cell Number | 08/21/2002 |
| 925848 | Antioch, CA | Pac – West Telecomm | Landline | 01/14/2000 |
| 925978 | Antioch, CA | Pacific Bell | Landline | 05/10/1999 |
| 925240 | Brentwood, CA | Pacific Bell | Landline | 05/10/1999 |
| 925308 | Brentwood, CA | Tw Telecom Of California Lp | Landline | 05/10/1999 |
| 925392 | Brentwood, CA | Teleport Communications Group – San Francisco | Landline | 03/03/2001 |
| 925418 | Brentwood, CA | Broadwing Communications | Landline | 06/30/2001 |
| 925420 | Brentwood, CA | O1 Communications | Landline | 06/30/2001 |
| 925513 | Brentwood, CA | Pacific Bell | Landline | 05/18/1998 |
| 925516 | Brentwood, CA | Pacific Bell | Landline | 05/18/1998 |
| 925626 | Brentwood, CA | Mcimetro Access Transmission Services LLC | Landline | 05/18/1998 |
| 925634 | Brentwood, CA | Pacific Bell | Landline | 05/18/1998 |
| 925666 | Brentwood, CA | Pac – West Telecomm | Landline | 07/22/1999 |
| 925809 | Brentwood, CA | U.s. Telepacific Corp. | Landline | 03/01/2001 |
| 925276 | Clayton, CA | Xo California | Landline | 07/22/1999 |
| 925524 | Clayton, CA | Pacific Bell | Landline | 01/14/2000 |
| 925567 | Clayton, CA | Sprint Spectrum L.p. | Cell Number | 07/17/2001 |
| 925672 | Clayton, CA | Pacific Bell | Landline | 05/18/1998 |
| 925673 | Clayton, CA | Pacific Bell | Landline | 05/18/1998 |
| 925690 | Clayton, CA | Mcimetro Access Transmission Services LLC | Landline | 02/27/1999 |
| 925693 | Clayton, CA | Teleport Communications Group – San Francisco | Landline | 10/31/2000 |
| 925844 | Clayton, CA | U.s. Telepacific Corp. | Landline | 07/17/2001 |
| 925889 | Clayton, CA | Pac – West Telecomm | Landline | 05/10/1999 |
| 925914 | Clayton, CA | T-mobile Usa | Cell Number | 09/20/2002 |
| 925993 | Clayton, CA | O1 Communications | Landline | 03/26/2001 |
| 925207 | Concord, CA | Sprint Spectrum L.p. | Cell Number | 10/18/2001 |
| 925222 | Concord, CA | Cf Communications DBA Telekenex | Landline | 09/09/2010 |
| 925246 | Concord, CA | Pacific Bell | Landline | 05/18/1998 |
| 925250 | Concord, CA | Sprint Spectrum L.p. | Cell Number | 05/10/1999 |
| 925265 | Concord, CA | Global Crossing Local Services-ca | Landline | 05/10/1999 |
| 925270 | Concord, CA | Broadwing Communications | Landline | 05/10/1999 |
| 925288 | Concord, CA | Pacific Bell | Landline | 07/22/1999 |
| 925305 | Concord, CA | Tw Telecom Of California Lp | Landline | 05/10/1999 |
| 925326 | Concord, CA | Level 3 Communications | Landline | 05/29/2013 |
| 925332 | Concord, CA | Peerless Network Of California | Landline | 10/04/2012 |
| 925334 | Concord, CA | Cellco Partnership DBA Verizon Wireless | Cell Number | 07/19/2011 |
| 925338 | Concord, CA | Bandwidth.com Clec | Landline | 07/22/2011 |
| 925346 | Concord, CA | American Messaging (am) | Cell Number | 07/22/1999 |
| 925348 | Concord, CA | New Cingular Wireless PCS | Cell Number | 01/28/2002 |
| 925349 | Concord, CA | Teleport Communications Group – San Francisco | Landline | 08/14/1998 |
| 925356 | Concord, CA | Pacific Bell | Landline | 05/18/1998 |
| 925363 | Concord, CA | Pacific Bell | Landline | 05/18/1998 |
| 925381 | Concord, CA | New Cingular Wireless PCS | Cell Number | 07/22/1999 |
| 925383 | Concord, CA | Sprint Spectrum L.p. | Cell Number | 07/22/1999 |
| 925391 | Concord, CA | Level 3 Communications | Landline | 11/25/2013 |
| 925405 | Concord, CA | Allegiance Telecom | Landline | 07/22/1999 |
| 925408 | Concord, CA | New Cingular Wireless PCS | Cell Number | 06/30/2001 |
| 925421 | Concord, CA | Bandwidth.com Clec | Landline | 01/27/2012 |
| 925429 | Concord, CA | Broadwing Communications | Landline | 06/13/2000 |
| 925435 | Concord, CA | T-mobile Usa | Landline | 03/03/2001 |
| 925446 | Concord, CA | Sprint Spectrum L.p. | Cell Number | 06/25/2012 |
| 925459 | Concord, CA | Broadwing Communications | Landline | 05/10/1999 |
| 925497 | Concord, CA | Metro PCS | Cell Number | 08/22/2001 |
| 925521 | Concord, CA | Pacific Bell | Landline | 10/13/1999 |
| 925566 | Concord, CA | AT&T Local | Landline | 05/10/1999 |
| 925585 | Concord, CA | American Messaging Services | Cell Number | 08/14/1998 |
| 925586 | Concord, CA | Cellco Partnership DBA Verizon Wireless | Cell Number | 06/13/2000 |
| 925595 | Concord, CA | Sprint Spectrum L.p. | Cell Number | 05/18/2001 |
| 925602 | Concord, CA | Pacific Bell | Landline | 05/18/1998 |
| 925603 | Concord, CA | Pacific Bell | Landline | 05/18/1998 |
| 925609 | Concord, CA | Pacific Bell | Landline | 05/18/1998 |
| 925646 | Concord, CA | Pacific Bell | Landline | 05/18/1998 |
| 925671 | Concord, CA | Pacific Bell | Landline | 05/18/1998 |
| 925674 | Concord, CA | Pacific Bell | Landline | 05/18/1998 |
| 925675 | Concord, CA | Pacific Bell | Landline | 05/18/1998 |
| 925676 | Concord, CA | Pacific Bell | Landline | 05/18/1998 |
| 925677 | Concord, CA | Pacific Bell | Landline | 05/18/1998 |
| 925680 | Concord, CA | Pacific Bell | Landline | 05/18/1998 |
| 925681 | Concord, CA | Pacific Bell | Landline | 05/18/1998 |
| 925682 | Concord, CA | Pacific Bell | Landline | 05/18/1998 |
| 925685 | Concord, CA | Pacific Bell | Landline | 05/18/1998 |
| 925686 | Concord, CA | Pacific Bell | Landline | 05/18/1998 |
| 925687 | Concord, CA | Pacific Bell | Landline | 05/18/1998 |
| 925688 | Concord, CA | Pacific Bell | Landline | 05/18/1998 |
| 925689 | Concord, CA | Pacific Bell | Landline | 05/18/1998 |
| 925691 | Concord, CA | Pacific Bell | Landline | 05/18/1998 |
| 925692 | Concord, CA | Pacific Bell | Landline | 05/18/1998 |
| 925695 | Concord, CA | Mpower Communications Corp | Landline | 05/18/1998 |
| 925726 | Concord, CA | Mpower Communications Corp | Landline | 01/14/2000 |
| 925768 | Concord, CA | Cellco Partnership DBA Verizon Wireless | Cell Number | 06/25/2001 |
| 925771 | Concord, CA | U.s. Telepacific Corp. | Landline | 03/01/2001 |
| 925787 | Concord, CA | Cellco Partnership DBA Verizon Wireless | Cell Number | 05/10/1999 |
| 925791 | Concord, CA | U.s. Telepacific Corp. | Landline | 07/16/2001 |
| 925798 | Concord, CA | Pacific Bell | Landline | 05/18/1998 |
| 925808 | Concord, CA | Pacific Bell | Landline | 05/10/1999 |
| 925822 | Concord, CA | Mcimetro Access Transmission Services LLC | Landline | 05/18/1998 |
| 925825 | Concord, CA | Pacific Bell | Landline | 05/18/1998 |
| 925826 | Concord, CA | Mci Worldcom Communications, Ca | Landline | 05/18/1998 |
| 925827 | Concord, CA | Pacific Bell | Landline | 05/18/1998 |
| 925849 | Concord, CA | U.s. Telepacific Corp. | Landline | 08/20/2000 |
| 925852 | Concord, CA | Xo California | Landline | 04/24/2001 |
| 925864 | Concord, CA | Sprint Spectrum L.p. | Cell Number | 08/20/2000 |
| 925887 | Concord, CA | Pac – West Telecomm | Landline | 05/10/1999 |
| 925890 | Concord, CA | New Cingular Wireless PCS | Cell Number | 11/20/1998 |
| 925969 | Concord, CA | Pacific Bell | Landline | 05/10/1999 |
| 925208 | Danville, CA | Teleport Communications Group – San Francisco | Landline | 05/10/1999 |
| 925217 | Danville, CA | Broadwing Communications | Landline | 05/10/1999 |
| 925263 | Danville, CA | Global Crossing Local Services-ca | Landline | 05/10/1999 |
| 925272 | Danville, CA | Level 3 Communications | Landline | 05/10/1999 |
| 925314 | Danville, CA | Pacific Bell | Landline | 05/18/1998 |
| 925345 | Danville, CA | American Messaging (am) | Cell Number | 07/22/1999 |
| 925362 | Danville, CA | Pacific Bell | Landline | 05/18/1998 |
| 925389 | Danville, CA | New Cingular Wireless PCS | Cell Number | 11/30/2001 |
| 925406 | Danville, CA | Allegiance Telecom | Landline | 07/22/1999 |
| 925552 | Danville, CA | Pacific Bell | Landline | 05/18/1998 |
| 925553 | Danville, CA | Xo California | Landline | 02/27/1999 |
| 925575 | Danville, CA | Sprint Spectrum L.p. | Cell Number | 03/03/2001 |
| 925594 | Danville, CA | Metro PCS | Cell Number | 09/21/2001 |
| 925648 | Danville, CA | Pacific Bell | Landline | 05/18/1998 |
| 925678 | Danville, CA | U.s. Telepacific Corp. | Landline | 08/20/2000 |
| 925683 | Danville, CA | New Cingular Wireless PCS | Cell Number | 05/10/1999 |
| 925718 | Danville, CA | O1 Communications | Landline | 01/26/2001 |
| 925725 | Danville, CA | Mpower Communications Corp | Landline | 06/13/2000 |
| 925735 | Danville, CA | Pacific Bell | Landline | 05/18/1998 |
| 925736 | Danville, CA | Pacific Bell | Landline | 05/18/1998 |
| 925743 | Danville, CA | Pacific Bell | Landline | 05/18/1998 |
| 925815 | Danville, CA | Pacific Bell | Landline | 05/18/1998 |
| 925820 | Danville, CA | Pacific Bell | Landline | 05/18/1998 |
| 925831 | Danville, CA | Pacific Bell | Landline | 05/18/1998 |
| 925837 | Danville, CA | Pacific Bell | Landline | 05/18/1998 |
| 925838 | Danville, CA | Pacific Bell | Landline | 05/18/1998 |
| 925854 | Danville, CA | Mci Worldcom Communications, Ca | Landline | 05/18/1998 |
| 925855 | Danville, CA | Pacific Bell | Landline | 05/18/1998 |
| 925856 | Danville, CA | Mcimetro Access Transmission Services LLC | Landline | 05/18/1998 |
| 925886 | Danville, CA | Pac – West Telecomm | Landline | 05/10/1999 |
| 925915 | Danville, CA | T-mobile Usa | Cell Number | 09/20/2002 |
| 925964 | Danville, CA | Pacific Bell | Landline | 05/10/1999 |
| 925968 | Danville, CA | Pacific Bell | Landline | 05/10/1999 |
| 925984 | Danville, CA | Sprint Spectrum L.p. | Cell Number | 08/20/2000 |
| 925226 | Fremont, CA | Xo California | Landline | 02/27/1999 |
| 925353 | Fremont, CA | New Cingular Wireless PCS | Cell Number | 01/28/2002 |
| 925860 | Fremont, CA | Xo California | Landline | 02/27/1999 |
| 925364 | Hayward, CA | Mci Worldcom Communications, Ca | Landline | 01/14/2000 |
| 925983 | Hayward, CA | Mci Worldcom Communications, Ca | Landline | 05/18/1998 |
| 925282 | Lafayette, CA | Mcimetro Access Transmission Services LLC | Landline | 05/18/1998 |
| 925283 | Lafayette, CA | Pacific Bell | Landline | 05/18/1998 |
| 925284 | Lafayette, CA | Pacific Bell | Landline | 05/18/1998 |
| 925297 | Lafayette, CA | Xo California | Landline | 02/27/1999 |
| 925298 | Lafayette, CA | Mci Worldcom Communications, Ca | Landline | 05/18/1998 |
| 925299 | Lafayette, CA | Pacific Bell | Landline | 05/18/1998 |
| 925310 | Lafayette, CA | Tw Telecom Of California Lp | Landline | 05/10/1999 |
| 925403 | Lafayette, CA | Allegiance Telecom | Landline | 07/22/1999 |
| 925444 | Lafayette, CA | U.s. Telepacific Corp. | Landline | 06/30/2001 |
| 925878 | Lafayette, CA | Sprint Spectrum L.p. | Cell Number | 08/20/2000 |
| 925900 | Lafayette, CA | O1 Communications | Landline | 05/10/1999 |
| 925962 | Lafayette, CA | Pacific Bell | Landline | 05/10/1999 |
| 925215 | Livermore, CA | Broadwing Communications | Landline | 05/10/1999 |
| 925243 | Livermore, CA | Pacific Bell | Landline | 05/10/1999 |
| 925245 | Livermore, CA | Pacific Bell | Landline | 05/10/1999 |
| 925273 | Livermore, CA | Xo California | Landline | 07/22/1999 |
| 925290 | Livermore, CA | Xo California | Landline | 07/22/1999 |
| 925292 | Livermore, CA | Comcast Phone Of California | Landline | 05/18/1998 |
| 925294 | Livermore, CA | Pacific Bell | Landline | 05/18/1998 |
| 925315 | Livermore, CA | Tw Telecom Of California Lp | Landline | 05/10/1999 |
| 925321 | Livermore, CA | New Cingular Wireless PCS | Cell Number | 11/30/2001 |
| 925337 | Livermore, CA | Cellco Partnership DBA Verizon Wireless | Cell Number | 01/28/2002 |
| 925339 | Livermore, CA | Metro PCS | Cell Number | 09/21/2001 |
| 925344 | Livermore, CA | Mpower Communications Corp | Landline | 05/18/1998 |
| 925347 | Livermore, CA | American Messaging (am) | Cell Number | 07/22/1999 |
| 925371 | Livermore, CA | Pacific Bell | Landline | 05/18/1998 |
| 925373 | Livermore, CA | Pacific Bell | Landline | 05/18/1998 |
| 925422 | Livermore, CA | Pacific Bell | Landline | 05/18/1998 |
| 925423 | Livermore, CA | Pacific Bell | Landline | 05/18/1998 |
| 925424 | Livermore, CA | Pacific Bell | Landline | 05/18/1998 |
| 925443 | Livermore, CA | Pacific Bell | Landline | 05/18/1998 |
| 925447 | Livermore, CA | Pacific Bell | Landline | 05/18/1998 |
| 925449 | Livermore, CA | Pacific Bell | Landline | 05/18/1998 |
| 925453 | Livermore, CA | Mcimetro Access Transmission Services LLC | Landline | 05/18/1998 |
| 925454 | Livermore, CA | Pacific Bell | Landline | 05/18/1998 |
| 925455 | Livermore, CA | Pacific Bell | Landline | 05/18/1998 |
| 925456 | Livermore, CA | Pacific Bell | Landline | 05/18/1998 |
| 925493 | Livermore, CA | Teleport Communications Group – San Francisco | Landline | 10/31/2000 |
| 925518 | Livermore, CA | Sprint Spectrum L.p. | Cell Number | 08/14/1998 |
| 925525 | Livermore, CA | Sprint Spectrum L.p. | Cell Number | 08/20/2000 |
| 925579 | Livermore, CA | Allegiance Telecom | Landline | 04/24/2001 |
| 925583 | Livermore, CA | U.s. Telepacific Corp. | Landline | 08/20/2000 |
| 925605 | Livermore, CA | Pac – West Telecomm | Landline | 11/20/1998 |
| 925606 | Livermore, CA | Pacific Bell | Landline | 05/18/1998 |
| 925667 | Livermore, CA | U.s. Telepacific Corp. | Landline | 05/18/2001 |
| 925724 | Livermore, CA | Mpower Communications Corp | Landline | 06/13/2000 |
| 925742 | Livermore, CA | American Messaging Services | Cell Number | 01/14/2000 |
| 925784 | Livermore, CA | Cellco Partnership DBA Verizon Wireless | Cell Number | 05/10/1999 |
| 925800 | Livermore, CA | O1 Communications | Landline | 05/10/1999 |
| 925960 | Livermore, CA | Pacific Bell | Landline | 05/10/1999 |
| 925961 | Livermore, CA | Pacific Bell | Landline | 05/10/1999 |
| 925980 | Livermore, CA | New Cingular Wireless PCS | Cell Number | 05/10/1999 |
| 925228 | Martinez, CA | Pacific Bell | Landline | 05/18/1998 |
| 925229 | Martinez, CA | Pacific Bell | Landline | 05/18/1998 |
| 925231 | Martinez, CA | Level 3 Communications | Landline | 05/10/1999 |
| 925269 | Martinez, CA | Xo California | Landline | 07/22/1999 |
| 925293 | Martinez, CA | Pac – West Telecomm | Landline | 07/22/1999 |
| 925313 | Martinez, CA | Pacific Bell | Landline | 05/18/1998 |
| 925335 | Martinez, CA | Pacific Bell | Landline | 05/18/1998 |
| 925369 | Martinez, CA | Pac – West Telecomm | Landline | 05/18/1998 |
| 925370 | Martinez, CA | Pacific Bell | Landline | 05/18/1998 |
| 925372 | Martinez, CA | Pacific Bell | Landline | 05/18/1998 |
| 925374 | Martinez, CA | Allegiance Telecom | Landline | 10/31/2000 |
| 925387 | Martinez, CA | Teleport Communications Group – San Francisco | Landline | 10/13/1999 |
| 925410 | Martinez, CA | American Messaging Services | Cell Number | 10/13/1999 |
| 925500 | Martinez, CA | O1 Communications | Landline | 05/10/1999 |
| 925608 | Martinez, CA | Broadwing Communications | Landline | 03/01/2001 |
| 925723 | Martinez, CA | Mpower Communications Corp | Landline | 06/13/2000 |
| 925812 | Martinez, CA | Metro PCS | Cell Number | 09/21/2001 |
| 925839 | Martinez, CA | U.s. Telepacific Corp. | Landline | 04/24/2001 |
| 925917 | Martinez, CA | T-mobile Usa | Cell Number | 09/20/2002 |
| 925957 | Martinez, CA | Pacific Bell | Landline | 05/10/1999 |
| 925235 | Moraga, CA | Level 3 Communications | Landline | 05/10/1999 |
| 925247 | Moraga, CA | Pacific Bell | Landline | 05/10/1999 |
| 925268 | Moraga, CA | Xo California | Landline | 07/22/1999 |
| 925320 | Moraga, CA | U.s. Telepacific Corp. | Landline | 03/27/2001 |
| 925376 | Moraga, CA | Pacific Bell | Landline | 05/18/1998 |
| 925377 | Moraga, CA | Pacific Bell | Landline | 05/18/1998 |
| 925631 | Moraga, CA | Pacific Bell | Landline | 05/18/1998 |
| 925794 | Moraga, CA | O1 Communications | Landline | 07/17/2001 |
| 925262 | Oakland, CA | Global Crossing Local Services-ca | Landline | 05/10/1999 |
| 925385 | Oakland, CA | Teleport Communications Group – San Francisco | Landline | 10/13/1999 |
| 925386 | Oakland, CA | Teleport Communications Group – San Francisco | Landline | 10/13/1999 |
| 925388 | Oakland, CA | Teleport Communications Group – San Francisco | Landline | 10/13/1999 |
| 925476 | Oakland, CA | Pac – West Telecomm | Landline | 10/13/1999 |
| 925871 | Oakland, CA | Pac – West Telecomm | Landline | 11/20/1998 |
| 925885 | Oakland, CA | Pac – West Telecomm | Landline | 05/10/1999 |
| 925888 | Oakland, CA | Pac – West Telecomm | Landline | 05/10/1999 |
| 925891 | Oakland, CA | Pac – West Telecomm | Landline | 05/10/1999 |
| 925940 | Oakland, CA | Pac – West Telecomm | Landline | 05/18/1998 |
| 925954 | Oakland, CA | Mpower Communications Corp | Landline | 05/18/1998 |
| 925955 | Oakland, CA | Pac – West Telecomm | Landline | 05/18/1998 |
| 925625 | Oakley, CA | Pacific Bell | Landline | 05/18/1998 |
| 925679 | Oakley, CA | Pacific Bell | Landline | 05/18/1998 |
| 925684 | Oakley, CA | Pacific Bell | Landline | 05/18/1998 |
| 925253 | Orinda, CA | Pacific Bell | Landline | 05/18/1998 |
| 925254 | Orinda, CA | Pacific Bell | Landline | 05/18/1998 |
| 925255 | Orinda, CA | Mci Worldcom Communications, Ca | Landline | 05/18/1998 |
| 925257 | Orinda, CA | Mcimetro Access Transmission Services LLC | Landline | 05/18/1998 |
| 925258 | Orinda, CA | Pacific Bell | Landline | 05/18/1998 |
| 925259 | Orinda, CA | Xo California | Landline | 02/27/1999 |
| 925402 | Orinda, CA | Allegiance Telecom | Landline | 07/22/1999 |
| 925438 | Orinda, CA | U.s. Telepacific Corp. | Landline | 10/31/2000 |
| 925528 | Orinda, CA | Sprint Spectrum L.p. | Cell Number | 10/31/2000 |
| 925203 | Pittsburg, CA | New Cingular Wireless PCS | Cell Number | 02/22/2002 |
| 925232 | Pittsburg, CA | Level 3 Communications | Landline | 05/10/1999 |
| 925252 | Pittsburg, CA | Pacific Bell | Landline | 05/10/1999 |
| 925261 | Pittsburg, CA | Pacific Bell | Landline | 05/10/1999 |
| 925267 | Pittsburg, CA | Xo California | Landline | 07/22/1999 |
| 925291 | Pittsburg, CA | Xo California | Landline | 07/22/1999 |
| 925325 | Pittsburg, CA | T-mobile Usa | Cell Number | 12/28/2001 |
| 925427 | Pittsburg, CA | Pacific Bell | Landline | 05/18/1998 |
| 925431 | Pittsburg, CA | Pacific Bell | Landline | 05/18/1998 |
| 925432 | Pittsburg, CA | Pacific Bell | Landline | 05/18/1998 |
| 925439 | Pittsburg, CA | Pacific Bell | Landline | 05/18/1998 |
| 925458 | Pittsburg, CA | Pacific Bell | Landline | 05/18/1998 |
| 925473 | Pittsburg, CA | Pacific Bell | Landline | 05/18/1998 |
| 925517 | Pittsburg, CA | O1 Communications | Landline | 05/18/2001 |
| 925526 | Pittsburg, CA | U.s. Telepacific Corp. | Landline | 08/20/2000 |
| 925573 | Pittsburg, CA | North County Communications Corp. | Landline | 06/13/2000 |
| 925597 | Pittsburg, CA | Cellco Partnership DBA Verizon Wireless | Cell Number | 06/13/2000 |
| 925635 | Pittsburg, CA | Teleport Communications Group – San Francisco | Landline | 08/20/2000 |
| 925643 | Pittsburg, CA | U.s. Telepacific Corp. | Landline | 05/21/2001 |
