925 Area Code: Location, Cities, Map And Time Zone

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Area code 925 is in California, USA , spanning 2 counties and serving 25 cities , including Concord, Antioch or Livermore; it currently uses 629 prefixes , assigned from 925-200-XXXX through 925-999-XXXX.

In service date for area code 925: March 14, 1998.

The current local time is .

925 area code location on a map
© OpenStreetMap contributorsFor exact NPA boundaries see official 925 area code map

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More California area codes:

  • 209
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  • 858
  • 909
  • 916
  • 949
  • 951

Locate any 925-NXX prefix:

925-200-XXXX --- 925-299-XXXX
NPANXX Carrier1 Area Served2 Date3
925-200 Cellco Partnership Pleasanton N/A
925-201 U.S. Telepacific Corp. Pleasanton N/A
925-202 T-Mobile USA Pleasanton N/A
925-203 New Cingular Wireless PCS Pittsburg 2/22/2002
925-204 T-Mobile USA Antioch 9/22/2015
925-205 T-Mobile USA Danville 08/16/2023
925-206 Cellco Partnership Antioch 8/29/2007
925-207 MetroPCS Concord 10/18/2001
925-208 Teleport Communications America Danville N/A
925-209 T-Mobile USA Pleasanton N/A
925-210 Pacific Bell Walnut Creek N/A
925-212 New Cingular Wireless PCS Walnut Creek N/A
925-213 USA Mobility Wireless Walnut Creek N/A
925-214 Peerless Network Of California Walnut Creek 9/10/2016
925-215 Level 3 Communications Livermore N/A
925-216 New Cingular Wireless PCS Dublin-San Ramon N/A
925-217 Level 3 Communications Danville N/A
925-218 Level 3 Communications Pleasanton N/A
925-219 Level 3 Communications Antioch N/A
925-220 Cellco Partnership Pittsburg 10/02/2023
925-221 33 Wireless Walnut Creek N/A
925-222 Onvoy Concord N/A
925-223 MCIMetro Access Transmission Services Pleasanton N/A
925-224 Pacific Bell Pleasanton N/A
925-225 Pacific Bell Pleasanton N/A
925-226 MCIMetro Access Transmission Services Pleasanton N/A
925-227 Pacific Bell Pleasanton N/A
925-228 Pacific Bell Martinez N/A
925-229 Pacific Bell Martinez N/A
925-230 Level 3 Communications Dublin-San Ramon N/A
925-231 Level 3 Communications Martinez N/A
925-232 Level 3 Communications Pittsburg West N/A
925-233 Level 3 Communications Sunol N/A
925-234 Level 3 Communications Antioch N/A
925-235 Level 3 Communications Moraga N/A
925-236 Level 3 Communications Dublin-San Ramon N/A
925-237 MCIMetro Access Transmission Services Antioch N/A
925-238 Comcast IP Phone Antioch 10/31/2008
925-239 Peerless Network Of California Walnut Creek 3/25/2013
925-240 Pacific Bell East Contra Costa N/A
925-241 MCIMetro Access Transmission Services Dublin-San Ramon N/A
925-242 Pacific Bell Bishop Ranch N/A
925-243 Pacific Bell Livermore N/A
925-244 Pacific Bell Bishop Ranch N/A
925-245 Pacific Bell Livermore N/A
925-246 Pacific Bell Concord N/A
925-247 Pacific Bell Moraga N/A
925-248 Pacific Bell Dublin-San Ramon N/A
925-249 Pacific Bell Pleasanton N/A
925-250 MetroPCS Concord N/A
925-251 Pacific Bell Pleasanton N/A
925-252 Pacific Bell Pittsburg N/A
925-253 Pacific Bell Orinda N/A
925-254 Pacific Bell Orinda N/A
925-255 MCIMetro Access Transmission Services Orinda N/A
925-256 Pacific Bell Walnut Creek N/A
925-257 MCIMetro Access Transmission Services Orinda N/A
925-258 Pacific Bell Orinda N/A
925-259 MCIMetro Access Transmission Services Orinda N/A
925-260 MetroPCS Walnut Creek N/A
925-261 Pacific Bell Pittsburg West N/A
925-262 Level 3 Communications Walnut Creek N/A
925-263 Level 3 Communications Danville N/A
925-264 Level 3 Communications Pleasanton N/A
925-265 Level 3 Communications Concord N/A
925-266 Cellco Partnership Walnut Creek 5/2/2016
925-267 MCIMetro Access Transmission Services Pittsburg N/A
925-268 MCIMetro Access Transmission Services Moraga N/A
925-269 MCIMetro Access Transmission Services Martinez N/A
925-270 Level 3 Communications Concord N/A
925-271 Teleport Communications America Pleasanton N/A
925-272 Level 3 Communications Danville N/A
925-273 MCIMetro Access Transmission Services Livermore N/A
925-274 Pacific Bell Walnut Creek N/A
925-275 Pacific Bell Bishop Ranch N/A
925-276 MCIMetro Access Transmission Services Clayton N/A
925-277 Pacific Bell Bishop Ranch N/A
925-278 Comcast IP Phone Walnut Creek 10/24/2013
925-279 Pacific Bell Walnut Creek N/A
925-280 Pacific Bell Walnut Creek N/A
925-281 Onvoy Antioch N/A
925-282 MCIMetro Access Transmission Services Lafayette N/A
925-283 Pacific Bell Lafayette N/A
925-284 Pacific Bell Lafayette N/A
925-285 New Cingular Wireless PCS Walnut Creek N/A
925-286 New Cingular Wireless PCS Walnut Creek N/A
925-287 Pacific Bell Walnut Creek N/A
925-288 Pacific Bell Concord N/A
925-289 Onvoy Walnut Creek 2/23/2009
925-290 Xo California Livermore N/A
925-291 MCIMetro Access Transmission Services Pittsburg West N/A
925-292 Comcast IP Phone Livermore N/A
925-293 Matrix Telecom Martinez N/A
925-294 Pacific Bell Livermore N/A
925-295 Pacific Bell Walnut Creek N/A
925-296 Pacific Bell Walnut Creek N/A
925-297 MCIMetro Access Transmission Services Lafayette N/A
925-298 MCIMetro Access Transmission Services Lafayette N/A
925-299 Pacific Bell Lafayette N/A
925-300-XXXX --- 925-399-XXXX
NPANXX Carrier1 Area Served2 Date3
925-300 T-Mobile USA Walnut Creek N/A
925-301 Level 3 Communications Antioch N/A
925-302 Level 3 Telecom Of California Bishop Ranch N/A
925-303 Level 3 Telecom Of California Antioch N/A
925-304 Level 3 Communications Clayton N/A
925-305 Level 3 Telecom Of California Concord N/A
925-306 Sonic Telecom East Contra Costa 1/13/2017
925-307 Level 3 Telecom Of California Dublin-San Ramon N/A
925-308 Level 3 Telecom Of California East Contra Costa N/A
925-309 Level 3 Telecom Of California Danville N/A
925-310 Level 3 Telecom Of California Lafayette N/A
925-312 USA Mobility Wireless Antioch N/A
925-313 Pacific Bell Martinez N/A
925-314 Pacific Bell Danville N/A
925-315 Level 3 Telecom Of California Livermore N/A
925-316 Level 3 Communications Martinez N/A
925-317 Bandwidth.com Clec Orinda N/A
925-318 Level 3 Telecom Of California Pittsburg N/A
925-319 T-Mobile USA Sunol N/A
925-320 U.S. Telepacific Corp. Moraga 3/27/2001
925-321 New Cingular Wireless PCS Livermore 11/30/2001
925-322 Bandwidth.com Clec Walnut Creek 5/10/2011
925-323 New Cingular Wireless PCS Walnut Creek N/A
925-324 Cellco Partnership Walnut Creek 8/21/2002
925-325 T-Mobile USA Antioch 12/28/2001
925-326 Level 3 Communications Concord N/A
925-327 Pacific Bell Bishop Ranch N/A
925-328 Pacific Bell Bishop Ranch N/A
925-329 Cellco Partnership Antioch 9/8/2014
925-330 New Cingular Wireless PCS Walnut Creek 11/30/2001
925-331 U.S. Telepacific Corp. Antioch 7/17/2001
925-332 Peerless Network Of California Concord 10/4/2012
925-333 American Messaging Services Walnut Creek N/A
925-334 Cellco Partnership Concord 7/19/2011
925-335 Pacific Bell Martinez N/A
925-336 New Cingular Wireless PCS Dublin-San Ramon 12/28/2001
925-337 Cellco Partnership Livermore 1/28/2002
925-338 Bandwidth.com Clec Concord 7/22/2011
925-339 MetroPCS Livermore 9/21/2001
925-340 USA Mobility Wireless Walnut Creek N/A
925-341 New Cingular Wireless PCS Livermore 4/21/2020
925-342 Commio Walnut Creek 12/07/2023
925-343 American Messaging Services Pleasanton N/A
925-344 U.S. Telepacific Corp. Livermore N/A
925-345 American Messaging Services Danville N/A
925-346 American Messaging Services Concord N/A
925-347 American Messaging Services Livermore N/A
925-348 New Cingular Wireless PCS Concord 1/28/2002
925-349 Teleport Communications America Concord N/A
925-350 Comcast IP Phone Antioch 9/13/2011
925-351 T-Mobile USA Pleasanton N/A
925-352 T-Mobile USA Pleasanton N/A
925-353 New Cingular Wireless PCS Pleasanton 1/28/2002
925-354 New Cingular Wireless PCS Antioch 1/28/2002
925-355 Pacific Bell Bishop Ranch N/A
925-356 Pacific Bell Concord N/A
925-357 Level 3 Communications Walnut Creek 9/13/2011
925-358 Pacific Bell Bishop Ranch N/A
925-359 MCIMetro Access Transmission Services Bishop Ranch N/A
925-360 New Cingular Wireless PCS Walnut Creek N/A
925-361 Teleport Communications America Dublin-San Ramon N/A
925-362 Pacific Bell Danville N/A
925-363 Pacific Bell Concord N/A
925-364 MCIMetro Access Transmission Services Dublin-San Ramon N/A
925-365 Teleport Communications America Bishop Ranch N/A
925-366 T-Mobile USA Pleasanton N/A
925-367 T-Mobile USA Pleasanton N/A
925-368 T-Mobile USA Pleasanton N/A
925-369 Matrix Telecom Martinez N/A
925-370 Pacific Bell Martinez N/A
925-371 Pacific Bell Livermore N/A
925-372 Pacific Bell Martinez N/A
925-373 Pacific Bell Livermore N/A
925-374 MCIMetro Access Transmission Services Martinez N/A
925-375 Cellco Partnership Concord 6/29/2016
925-376 Pacific Bell Moraga N/A
925-377 Pacific Bell Moraga N/A
925-378 Cellco Partnership Walnut Creek 12/11/2014
925-379 Level 3 Telecom Of California Pleasanton 11/10/2014
925-380 Level 3 Communications Bishop Ranch N/A
925-381 New Cingular Wireless PCS Concord N/A
925-382 T-Mobile USA Antioch N/A
925-383 MetroPCS Concord N/A
925-384 AT&T Enterprises Antioch 12/5/2014
925-385 Teleport Communications America Lafayette N/A
925-386 Teleport Communications America Orinda N/A
925-387 Teleport Communications America Martinez N/A
925-388 Teleport Communications America Moraga N/A
925-389 New Cingular Wireless PCS Danville 11/30/2001
925-390 New Cingular Wireless PCS East Contra Costa 4/11/2016
925-391 Level 3 Communications Concord 11/25/2013
925-392 Teleport Communications America East Contra Costa N/A
925-393 Onvoy Walnut Creek 6/16/2015
925-394 Level 3 Communications Bishop Ranch N/A
925-395 Teleport Communications America Walnut Creek N/A
925-396 Onvoy Pleasanton N/A
925-397 Onvoy Pleasanton N/A
925-398 Teleport Communications America Pleasanton N/A
925-399 Comcast IP Phone Pleasanton N/A
925-400-XXXX --- 925-499-XXXX
NPANXX Carrier1 Area Served2 Date3
925-400 Bandwidth.com Clec Pleasanton N/A
925-401 MCIMetro Access Transmission Services Pleasanton N/A
925-402 MCIMetro Access Transmission Services Orinda N/A
925-403 MCIMetro Access Transmission Services Lafayette N/A
925-404 MCIMetro Access Transmission Services Dublin-San Ramon N/A
925-405 MCIMetro Access Transmission Services Concord N/A
925-406 MCIMetro Access Transmission Services Danville N/A
925-407 MCIMetro Access Transmission Services Walnut Creek N/A
925-408 New Cingular Wireless PCS Concord N/A
925-409 Cellco Partnership Livermore 8/18/2017
925-410 U.S. Telepacific Corp. Pleasanton 7/14/2020
925-412 Cellco Partnership Concord 11/19/2018
925-413 New Cingular Wireless PCS Dublin-San Ramon N/A
925-414 Cellco Partnership Concord 7/31/2019
925-415 Level 3 Communications Bishop Ranch N/A
925-416 Pacific Bell Pleasanton N/A
925-417 Pacific Bell Pleasanton N/A
925-418 Level 3 Communications East Contra Costa N/A
925-419 Onvoy Concord 10/02/2023
925-420 Onvoy East Contra Costa N/A
925-421 Bandwidth.com Clec Concord 1/27/2012
925-422 Pacific Bell Livermore N/A
925-423 Pacific Bell Livermore N/A
925-424 Pacific Bell Livermore N/A
925-425 Teleport Communications America Pleasanton N/A
925-426 Pacific Bell Pleasanton N/A
925-427 Pacific Bell Pittsburg N/A
925-428 T-Mobile USA Antioch 4/19/2013
925-429 Level 3 Communications Concord N/A
925-430 Comcast IP Phone Walnut Creek 10/9/2019
925-431 Pacific Bell Pittsburg N/A
925-432 Pacific Bell Pittsburg N/A
925-433 Comcast IP Phone Walnut Creek 11/2/2015
925-434 Peerless Network Of California Antioch N/A
925-435 T-Mobile USA Concord N/A
925-436 T-Mobile USA Antioch 8/30/2016
925-437 New Cingular Wireless PCS Antioch N/A
925-438 U.S. Telepacific Corp. Orinda N/A
925-439 Pacific Bell Pittsburg N/A
925-440 Cellco Partnership Walnut Creek 11/2/2018
925-441 U.S. Telepacific Corp. Antioch 6/29/2022
925-443 Pacific Bell Livermore N/A
925-444 U.S. Telepacific Corp. Lafayette N/A
925-445 T-Mobile USA Antioch 4/5/2021
925-446 MetroPCS Concord 6/25/2012
925-447 Pacific Bell Livermore N/A
925-448 Cellco Partnership Walnut Creek 4/28/2014
925-449 Pacific Bell Livermore N/A
925-450 Bandwidth.com Clec East Contra Costa 6/26/2020
925-451 New Cingular Wireless PCS Walnut Creek N/A
925-452 U.S. Telepacific Corp. Dublin-San Ramon N/A
925-453 MCIMetro Access Transmission Services Livermore N/A
925-454 Pacific Bell Livermore N/A
925-455 Pacific Bell Livermore N/A
925-456 Pacific Bell Livermore N/A
925-457 T-Mobile USA Walnut Creek N/A
925-458 Pacific Bell Pittsburg West N/A
925-459 Level 3 Communications Concord N/A
925-460 Pacific Bell Pleasanton N/A
925-461 Pacific Bell Pleasanton N/A
925-462 Pacific Bell Pleasanton N/A
925-463 Pacific Bell Pleasanton N/A
925-464 Cellco Partnership Walnut Creek 8/16/2012
925-465 Level 3 Communications Walnut Creek N/A
925-466 Fractel Concord 9/17/2020
925-467 Pacific Bell Pleasanton N/A
925-468 Pacific Bell Pleasanton N/A
925-469 Pacific Bell Pleasanton N/A
925-470 Teleport Communications America Antioch N/A
925-471 Onvoy Concord 8/25/2014
925-472 Pacific Bell Walnut Creek N/A
925-473 Pacific Bell Pittsburg N/A
925-474 U.S. Telepacific Corp. Pleasanton N/A
925-475 Matrix Telecom Pleasanton N/A
925-476 Matrix Telecom Walnut Creek N/A
925-477 T-Mobile USA Antioch 1/18/2019
925-478 Level 3 Communications Walnut Creek N/A
925-479 Pacific Bell Dublin-San Ramon N/A
925-480 U.S. Telepacific Corp. Bishop Ranch N/A
925-481 New Cingular Wireless PCS Antioch 3/24/2014
925-482 U.S. Telepacific Corp. Walnut Creek N/A
925-483 Comcast IP Phone Concord 4/23/2015
925-484 Pacific Bell Pleasanton N/A
925-485 Pacific Bell Pleasanton N/A
925-486 Onvoy Danville 04/29/2024
925-487 New Cingular Wireless PCS Dublin-San Ramon N/A
925-488 Peerless Network Of California Walnut Creek 6/24/2019
925-489 T-Mobile USA Antioch 10/15/2020
925-490 Bandwidth.com Clec Concord 5/23/2014
925-491 Onvoy Antioch 10/02/2023
925-492 Commio Pittsburg 9/24/2021
925-493 Teleport Communications America Livermore N/A
925-494 Bandwidth.com Clec Concord 4/16/2015
925-495 Bandwidth.com Clec Livermore 8/2/2016
925-496 Bandwidth.com Clec Concord 12/23/2021
925-497 MetroPCS Concord 8/22/2001
925-498 U.S. Telepacific Corp. Bishop Ranch N/A
925-499 MCIMetro Access Transmission Services Concord 12/26/2017
925-500-XXXX --- 925-599-XXXX
NPANXX Carrier1 Area Served2 Date3
925-500 Onvoy Martinez N/A
925-501 T-Mobile USA Antioch 5/17/2022
925-502 New Cingular Wireless PCS Danville 7/21/2022
925-503 T-Mobile USA Antioch 3/23/2017
925-504 New Cingular Wireless PCS Pittsburg West 12/16/2022
925-505 Dish Wireless Livermore 7/28/2022
925-506 T-Mobile USA Antioch 01/19/2023
925-507 Cellco Partnership Concord 01/04/2023
925-508 Onvoy East Contra Costa 03/31/2023
925-509 USA Mobility Wireless Bishop Ranch N/A
925-510 MetroPCS Concord 3/23/2018
925-512 Onvoy Walnut Creek 10/02/2023
925-513 Pacific Bell East Contra Costa N/A
925-514 New Cingular Wireless PCS Martinez 10/06/2023
925-515 Onvoy Concord 11/11/2020
925-516 Pacific Bell East Contra Costa N/A
925-517 Onvoy Pittsburg West 5/18/2001
925-518 MetroPCS Livermore N/A
925-519 Cellco Partnership Pleasanton N/A
925-520 Pacific Bell Pleasanton N/A
925-521 Pacific Bell Concord N/A
925-522 Pacific Bell Antioch N/A
925-523 Pacific Bell Pleasanton N/A
925-524 Pacific Bell Clayton N/A
925-525 MetroPCS Livermore N/A
925-526 U.S. Telepacific Corp. Pittsburg N/A
925-527 Utility Telecom Group Walnut Creek N/A
925-528 T-Mobile USA Orinda N/A
925-529 Onvoy Antioch N/A
925-531 Onvoy Spectrum Lafayette 11/27/2023
925-532 Telnyx Walnut Creek 3/17/2017
925-533 Fractel Livermore 9/17/2020
925-534 Level 3 Communications Livermore 8/6/2019
925-535 MetroPCS Pleasanton N/A
925-536 Telnyx Concord 3/17/2017
925-537 Ton80 Communications Livermore 1/14/2022
925-538 T-Mobile USA Antioch 01/19/2024
925-539 T-Mobile USA Antioch 06/21/2024
925-540 New Cingular Wireless PCS Danville 11/20/2024
925-541 Shelcomm Livermore 09/12/2024
925-542 Cellco Partnership Walnut Creek 12/26/2017
925-543 Pacific Bell Bishop Ranch N/A
925-544 New Cingular Wireless PCS Antioch 04/09/2025
925-545 T-Mobile USA Antioch 06/25/2025
925-546 Ton80 Communications Walnut Creek 1/7/2022
925-548 New Cingular Wireless PCS Dublin-San Ramon N/A
925-549 New Cingular Wireless PCS Dublin-San Ramon N/A
925-550 New Cingular Wireless PCS Antioch N/A
925-551 Pacific Bell Dublin-San Ramon N/A
925-552 Pacific Bell Danville N/A
925-553 MCIMetro Access Transmission Services Danville N/A
925-556 Pacific Bell Dublin-San Ramon N/A
925-557 MCIMetro Access Transmission Services Dublin-San Ramon N/A
925-558 MCIMetro Access Transmission Services Dublin-San Ramon N/A
925-560 Pacific Bell Dublin-San Ramon N/A
925-565 MetroPCS Antioch 9/21/2001
925-566 Teleport Communications America Concord N/A
925-567 T-Mobile USA Clayton 7/17/2001
925-568 Teleport Communications America Sunol N/A
925-570 T-Mobile USA Dublin-San Ramon N/A
925-571 North County Communication Corporation Bishop Ranch N/A
925-572 North County Communication Corporation Pleasanton N/A
925-573 North County Communication Corporation Pittsburg N/A
925-574 U.S. Telepacific Corp. Dublin-San Ramon 6/27/2001
925-575 MetroPCS Danville N/A
925-577 T-Mobile USA Dublin-San Ramon 9/19/2001
925-578 Ton80 Communications East Contra Costa 11/3/2020
925-579 MCIMetro Access Transmission Services Livermore 4/24/2001
925-580 T-Mobile USA Pleasanton N/A
925-583 U.S. Telepacific Corp. Livermore N/A
925-584 T-Mobile USA Antioch N/A
925-586 Cellco Partnership Concord N/A
925-587 U.S. Telepacific Corp. Dublin-San Ramon N/A
925-588 U.S. Telepacific Corp. Walnut Creek N/A
925-590 Onvoy Spectrum Bishop Ranch 6/23/2022
925-592 U.S. Telepacific Corp. Moraga N/A
925-594 MetroPCS Danville 9/21/2001
925-595 MetroPCS Concord 5/18/2001
925-596 Cellco Partnership Pleasanton N/A
925-597 Cellco Partnership Pittsburg N/A
925-598 Pacific Bell Pleasanton N/A
925-599 Fractel Livermore 1/27/2021
925-600-XXXX --- 925-699-XXXX
NPANXX Carrier1 Area Served2 Date3
925-600 Pacific Bell Pleasanton N/A
925-602 Pacific Bell Concord N/A
925-603 Pacific Bell Concord N/A
925-605 Matrix Telecom Livermore N/A
925-606 Pacific Bell Livermore N/A
925-608 Level 3 Communications Martinez 3/1/2001
925-609 Pacific Bell Concord N/A
925-621 U.S. Telepacific Corp. Pleasanton 4/26/2001
925-623 T-Mobile USA Pleasanton N/A
925-625 Pacific Bell East Contra Costa N/A
925-626 MCIMetro Access Transmission Services East Contra Costa N/A
925-627 U.S. Telepacific Corp. Walnut Creek 3/27/2001
925-628 Cellco Partnership Antioch N/A
925-631 Pacific Bell Moraga N/A
925-633 Fractel Concord 8/5/2021
925-634 Pacific Bell East Contra Costa N/A
925-635 Teleport Communications America Pittsburg N/A
925-639 T-Mobile USA Walnut Creek 10/18/2001
925-640 New Cingular Wireless PCS Dublin-San Ramon N/A
925-642 New Cingular Wireless PCS Antioch N/A
925-643 U.S. Telepacific Corp. Pittsburg West 5/21/2001
925-644 Fractel Concord 7/13/2021
925-646 Pacific Bell Concord N/A
925-648 Pacific Bell Danville N/A
925-655 Fractel Concord 3/20/2019
925-658 Teleport Communications America Walnut Creek N/A
925-659 Teleport Communications America Bishop Ranch N/A
925-660 Level 3 Telecom Of California Pleasanton N/A
925-663 Matrix Telecom Sunol N/A
925-664 Matrix Telecom Pittsburg West N/A
925-665 Matrix Telecom Pittsburg N/A
925-666 Matrix Telecom East Contra Costa N/A
925-667 U.S. Telepacific Corp. Livermore 5/18/2001
925-671 Pacific Bell Concord N/A
925-672 Pacific Bell Clayton N/A
925-673 Pacific Bell Clayton N/A
925-674 Pacific Bell Concord N/A
925-675 Pacific Bell Concord N/A
925-676 Pacific Bell Concord N/A
925-677 Pacific Bell Concord N/A
925-678 U.S. Telepacific Corp. Danville N/A
925-679 Pacific Bell East Contra Costa N/A
925-680 Pacific Bell Concord N/A
925-681 Pacific Bell Concord N/A
925-682 Pacific Bell Concord N/A
925-683 New Cingular Wireless PCS Danville N/A
925-684 Pacific Bell East Contra Costa N/A
925-685 Pacific Bell Concord N/A
925-686 Pacific Bell Concord N/A
925-687 Pacific Bell Concord N/A
925-688 Pacific Bell Concord N/A
925-689 Pacific Bell Concord N/A
925-690 MCIMetro Access Transmission Services Clayton N/A
925-691 Pacific Bell Concord N/A
925-692 Pacific Bell Concord N/A
925-693 Teleport Communications America Clayton N/A
925-694 MCIMetro Access Transmission Services Pleasanton N/A
925-695 MetroPCS Concord N/A
925-698 New Cingular Wireless PCS Pittsburg N/A
925-699 New Cingular Wireless PCS Pleasanton N/A
925-701-XXXX --- 925-799-XXXX
NPANXX Carrier1 Area Served2 Date3
925-701 U.S. Telepacific Corp. Pleasanton N/A
925-705 MetroPCS Walnut Creek 8/22/2001
925-706 Pacific Bell Antioch N/A
925-708 Cellco Partnership Walnut Creek 1/26/2001
925-709 Pacific Bell Pittsburg West N/A
925-718 Onvoy Danville 1/26/2001
925-719 Cellco Partnership Dublin-San Ramon 4/16/2002
925-722 Fractel Walnut Creek 7/7/2021
925-723 U.S. Telepacific Corp. Martinez N/A
925-724 U.S. Telepacific Corp. Livermore N/A
925-725 U.S. Telepacific Corp. Danville N/A
925-726 U.S. Telepacific Corp. Concord N/A
925-727 MetroPCS Antioch N/A
925-730 Pacific Bell Pleasanton N/A
925-732 Onvoy Antioch N/A
925-733 Fractel Danville 8/5/2021
925-734 Pacific Bell Pleasanton N/A
925-735 Pacific Bell Bishop Ranch N/A
925-736 Pacific Bell Danville N/A
925-737 Pacific Bell Pleasanton N/A
925-738 MCIMetro Access Transmission Services Pleasanton N/A
925-743 Pacific Bell Danville N/A
925-744 Fractel Walnut Creek 11/13/2020
925-746 Pacific Bell Walnut Creek N/A
925-750 MCIMetro Access Transmission Services Pleasanton N/A
925-752 MCIMetro Access Transmission Services Antioch N/A
925-753 Pacific Bell Antioch N/A
925-754 Pacific Bell Antioch N/A
925-755 Pacific Bell Antioch N/A
925-756 Pacific Bell Antioch N/A
925-757 Pacific Bell Antioch N/A
925-758 Fractel Livermore 3/20/2019
925-759 New Cingular Wireless PCS Antioch N/A
925-762 Pacific Bell Bishop Ranch N/A
925-765 MetroPCS Walnut Creek N/A
925-766 T-Mobile USA Walnut Creek N/A
925-768 Cellco Partnership Concord 6/25/2001
925-771 U.S. Telepacific Corp. Concord 3/1/2001
925-775 Matrix Telecom Antioch N/A
925-776 Pacific Bell Antioch N/A
925-777 Pacific Bell Antioch N/A
925-778 Pacific Bell Antioch N/A
925-779 Pacific Bell Antioch N/A
925-783 Cellco Partnership Antioch N/A
925-784 Cellco Partnership Livermore N/A
925-785 Cellco Partnership Dublin-San Ramon N/A
925-786 Cellco Partnership Bishop Ranch N/A
925-787 Cellco Partnership Concord N/A
925-788 Cellco Partnership Walnut Creek N/A
925-789 Cellco Partnership Sunol N/A
925-790 Pacific Bell Bishop Ranch 1/26/2001
925-791 U.S. Telepacific Corp. Danville 7/16/2001
925-794 Onvoy Moraga 7/17/2001
925-798 Pacific Bell Concord N/A
925-799 Fractel Pittsburg 3/20/2019
925-800-XXXX --- 925-899-XXXX
NPANXX Carrier1 Area Served2 Date3
925-800 Onvoy Livermore N/A
925-803 Pacific Bell Dublin-San Ramon N/A
925-804 Teleport Communications America Bishop Ranch N/A
925-806 Pacific Bell Bishop Ranch N/A
925-807 MCIMetro Access Transmission Services Bishop Ranch N/A
925-808 Pacific Bell Concord N/A
925-809 U.S. Telepacific Corp. East Contra Costa 3/1/2001
925-812 MetroPCS Martinez 9/21/2001
925-813 Cellco Partnership Antioch 8/21/2002
925-815 Pacific Bell Bishop Ranch N/A
925-817 Pacific Bell Walnut Creek N/A
925-818 New Cingular Wireless PCS Walnut Creek N/A
925-819 New Cingular Wireless PCS Dublin-San Ramon N/A
925-820 Pacific Bell Danville N/A
925-822 MCIMetro Access Transmission Services Concord N/A
925-823 Pacific Bell Bishop Ranch N/A
925-824 Pacific Bell Bishop Ranch N/A
925-825 Pacific Bell Concord N/A
925-826 MCIMetro Access Transmission Services Concord N/A
925-827 Pacific Bell Concord N/A
925-828 Pacific Bell Dublin-San Ramon N/A
925-829 Pacific Bell Dublin-San Ramon N/A
925-830 Pacific Bell Bishop Ranch N/A
925-831 Pacific Bell Danville N/A
925-832 Ton80 Communications East Contra Costa 1/31/2022
925-833 Pacific Bell Dublin-San Ramon N/A
925-834 Ton80 Communications Antioch 9/29/2021
925-835 U.S. Telepacific Corp. Sunol N/A
925-837 Pacific Bell Danville N/A
925-838 Pacific Bell Danville N/A
925-839 U.S. Telepacific Corp. Martinez 4/24/2001
925-842 Pacific Bell Bishop Ranch N/A
925-843 Level 3 Telecom Of California Bishop Ranch 5/20/2010
925-844 U.S. Telepacific Corp. Clayton 7/17/2001
925-846 Pacific Bell Pleasanton N/A
925-847 Pacific Bell Pleasanton N/A
925-848 Matrix Telecom Antioch N/A
925-849 U.S. Telepacific Corp. Concord N/A
925-852 MCIMetro Access Transmission Services Concord 4/24/2001
925-854 MCIMetro Access Transmission Services Danville N/A
925-855 Pacific Bell Danville N/A
925-856 MCIMetro Access Transmission Services Danville N/A
925-858 New Cingular Wireless PCS Dublin-San Ramon N/A
925-860 Onvoy Sunol N/A
925-862 Pacific Bell Sunol N/A
925-864 MetroPCS Concord N/A
925-866 Pacific Bell Bishop Ranch N/A
925-867 Pacific Bell Bishop Ranch N/A
925-871 Onvoy Lafayette N/A
925-872 Cellco Partnership Pleasanton N/A
925-875 Pacific Bell Dublin-San Ramon N/A
925-876 New Cingular Wireless PCS Walnut Creek N/A
925-877 Fractel Antioch 3/20/2019
925-878 T-Mobile USA Lafayette N/A
925-880 Fractel East Contra Costa 7/13/2021
925-884 Matrix Telecom Bishop Ranch N/A
925-885 Matrix Telecom Orinda N/A
925-886 Matrix Telecom Danville N/A
925-887 Matrix Telecom Concord N/A
925-888 Matrix Telecom Moraga N/A
925-889 Matrix Telecom Clayton N/A
925-890 New Cingular Wireless PCS Concord N/A
925-891 Matrix Telecom Walnut Creek N/A
925-892 Matrix Telecom Pleasanton N/A
925-895 MetroPCS Dublin-San Ramon N/A
925-897 T-Mobile USA Dublin-San Ramon 9/17/2021
925-899 New Cingular Wireless PCS Walnut Creek N/A
925-900-XXXX --- 925-999-XXXX
NPANXX Carrier1 Area Served2 Date3
925-900 Onvoy Lafayette N/A
925-901 Pacific Bell Bishop Ranch N/A
925-904 Pacific Bell Bishop Ranch N/A
925-905 Matrix Telecom Dublin-San Ramon N/A
925-906 Pacific Bell Walnut Creek N/A
925-913 T-Mobile USA Bishop Ranch 9/20/2002
925-914 T-Mobile USA Clayton 9/20/2002
925-915 T-Mobile USA Danville 9/20/2002
925-917 T-Mobile USA Martinez 9/20/2002
925-918 Cellco Partnership Pleasanton N/A
925-920 USA Mobility Wireless Walnut Creek N/A
925-922 T-Mobile USA Pleasanton 9/20/2002
925-924 Pacific Bell Pleasanton N/A
925-925 Onvoy Concord 9/27/2022
925-926 Pacific Bell Walnut Creek N/A
925-927 Pacific Bell Walnut Creek N/A
925-930 Pacific Bell Walnut Creek N/A
925-931 Pacific Bell Pleasanton N/A
925-932 Pacific Bell Walnut Creek N/A
925-933 Pacific Bell Walnut Creek N/A
925-934 Pacific Bell Walnut Creek N/A
925-935 Pacific Bell Walnut Creek N/A
925-937 Pacific Bell Walnut Creek N/A
925-938 Pacific Bell Walnut Creek N/A
925-939 Pacific Bell Walnut Creek N/A
925-940 Onvoy Walnut Creek N/A
925-941 Pacific Bell Walnut Creek N/A
925-942 Pacific Bell Walnut Creek N/A
925-943 Pacific Bell Walnut Creek N/A
925-944 Pacific Bell Walnut Creek N/A
925-945 Pacific Bell Walnut Creek N/A
925-946 Pacific Bell Walnut Creek N/A
925-947 Pacific Bell Walnut Creek N/A
925-948 MCIMetro Access Transmission Services Walnut Creek N/A
925-949 Teleport Communications America Walnut Creek N/A
925-951 MCIMetro Access Transmission Services Walnut Creek N/A
925-952 Pacific Bell Walnut Creek N/A
925-953 Level 3 Telecom Of California Walnut Creek N/A
925-954 U.S. Telepacific Corp. Walnut Creek N/A
925-955 Utility Telecom Group Walnut Creek N/A
925-956 MCIMetro Access Transmission Services Walnut Creek N/A
925-957 Pacific Bell Martinez N/A
925-960 Pacific Bell Livermore N/A
925-961 Pacific Bell Livermore N/A
925-962 Pacific Bell Lafayette N/A
925-963 New Cingular Wireless PCS Pleasanton N/A
925-964 Pacific Bell Danville N/A
925-965 Teleport Communications America Pleasanton N/A
925-966 Fractel Antioch 4/18/2021
925-967 Pacific Bell Dublin-San Ramon N/A
925-968 Pacific Bell Bishop Ranch N/A
925-969 Pacific Bell Concord N/A
925-973 Pacific Bell Bishop Ranch N/A
925-974 Pacific Bell Walnut Creek N/A
925-975 Pacific Bell Walnut Creek N/A
925-977 Pacific Bell Walnut Creek N/A
925-978 Pacific Bell Antioch N/A
925-979 Pacific Bell Walnut Creek N/A
925-980 New Cingular Wireless PCS Livermore N/A
925-983 MCIMetro Access Transmission Services Bishop Ranch N/A
925-984 MetroPCS Danville N/A
925-988 Pacific Bell Walnut Creek N/A
925-989 Cellco Partnership Pleasanton N/A
925-990 Utility Telecom Group Sunol N/A
925-993 HD Carrier Clayton 3/26/2001
925-995 Onvoy Spectrum Concord 01/04/2024
925-997 New Cingular Wireless PCS Dublin-San Ramon N/A
925-998 New Cingular Wireless PCS Pleasanton N/A
925-999 Cellco Partnership Dublin-San Ramon N/A
  1. NPA-NXX assigned carrier; with Number Pooling thousand block numbers are often assigned to other carriers as well; moreover, phone numbers can be ported between service providers
  2. For 'Area served' we list the rate center. In the North American Numbering Plan a rate center is a geographic area used to determine local calling boundaries for billing purposes. Its name is generally a locality, often not the only one served by an NPA-NXX combination.
  3. Assignment date. N/A - mostly central office codes assigned before 2001.
  4. NXX prefixes last updated: November 22, 2025

Cities in area code 925

City1 County Time Zone1
Alamo Contra Costa P
Antioch Contra Costa P
Bethel Island Contra Costa P
Brentwood Contra Costa P
Byron Contra Costa P
Canyon Contra Costa P
Clayton Contra Costa P
Concord Contra Costa P
Danville Contra Costa P
Diablo Contra Costa P
Discovery Bay Contra Costa P
Dublin Alameda P
Lafayette Contra Costa P
Livermore Alameda P
Martinez Contra Costa P
Moraga Contra Costa P
Oakley Contra Costa P
Orinda Contra Costa P
Pacheco Contra Costa P
Pittsburg Contra Costa P
Pleasant Hill Contra Costa P
Pleasanton Alameda P
San Ramon Contra Costa P
Sunol Alameda P
Walnut Creek Contra Costa P
  1. Listed above are most places served by USA area code 925. When multiple places in a US state share the same name we list the largest one only. Cities with population over 50,000 are displayed in bold text.
  2. P stands for Pacific Time (currently ).
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