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

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Area Code 925

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

Phone number lookup

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More California area codes:

  • 209
  • 213
  • 279
  • 310
  • 323
  • 341
  • 350
  • 357
  • 369
  • 408
  • 415
  • 424
  • 442
  • 510
  • 530
  • 559
  • 562
  • 619
  • 626
  • 628
  • 650
  • 657
  • 661
  • 669
  • 707
  • 714
  • 738
  • 747
  • 760
  • 805
  • 818
  • 820
  • 831
  • 837
  • 840
  • 858
  • 909
  • 916
  • 949
  • 951

Locate any 925-NXX prefix:

925-200-XXXX --- 925-299-XXXX
NPANXX Area served[1] Provider[2] Date[3]
925-200 Pleasanton Cellco Partnership N/A
925-201 Pleasanton Multiple N/A
925-202 Pleasanton Multiple N/A
925-203 Pittsburg Multiple 2/22/2002
925-204 Antioch Multiple 9/22/2015
925-205 Danville Multiple 08/16/2023
925-206 Antioch Multiple 8/29/2007
925-207 Concord MetroPCS 10/18/2001
925-208 Danville Multiple N/A
925-209 Pleasanton Multiple N/A
925-210 Walnut Creek Pacific Bell N/A
925-212 Walnut Creek New Cingular Wireless PCS N/A
925-213 Walnut Creek USA Mobility Wireless N/A
925-214 Walnut Creek Multiple 9/10/2016
925-215 Livermore Multiple N/A
925-216 Dublin-San Ramon New Cingular Wireless PCS N/A
925-217 Danville Multiple N/A
925-218 Pleasanton Multiple N/A
925-219 Antioch Multiple N/A
925-220 Pittsburg Multiple 10/02/2023
925-221 Walnut Creek 33 Wireless N/A
925-222 Concord Multiple N/A
925-223 Pleasanton Multiple N/A
925-224 Pleasanton Pacific Bell N/A
925-225 Pleasanton Pacific Bell N/A
925-226 Pleasanton Multiple N/A
925-227 Pleasanton Pacific Bell N/A
925-228 Martinez Pacific Bell N/A
925-229 Martinez Pacific Bell N/A
925-230 Dublin-San Ramon Multiple N/A
925-231 Martinez Multiple N/A
925-232 Pittsburg West Multiple N/A
925-233 Sunol Multiple N/A
925-234 Antioch Multiple N/A
925-235 Moraga Multiple N/A
925-236 Dublin-San Ramon Multiple N/A
925-237 Antioch Multiple N/A
925-238 Antioch Multiple 10/31/2008
925-239 Walnut Creek Multiple 3/25/2013
925-240 East Contra Costa Multiple N/A
925-241 Dublin-San Ramon Multiple N/A
925-242 Bishop Ranch Multiple N/A
925-243 Livermore Multiple N/A
925-244 Bishop Ranch Pacific Bell N/A
925-245 Livermore Pacific Bell N/A
925-246 Concord Multiple N/A
925-247 Moraga Multiple N/A
925-248 Dublin-San Ramon Multiple N/A
925-249 Pleasanton Multiple N/A
925-250 Concord MetroPCS N/A
925-251 Pleasanton Pacific Bell N/A
925-252 Pittsburg Multiple N/A
925-253 Orinda Pacific Bell N/A
925-254 Orinda Pacific Bell N/A
925-255 Orinda Multiple N/A
925-256 Walnut Creek Pacific Bell N/A
925-257 Orinda Multiple N/A
925-258 Orinda Multiple N/A
925-259 Orinda Multiple N/A
925-260 Walnut Creek Multiple N/A
925-261 Pittsburg West Multiple N/A
925-262 Walnut Creek Multiple N/A
925-263 Danville Multiple N/A
925-264 Pleasanton Multiple N/A
925-265 Concord Multiple N/A
925-266 Walnut Creek Multiple 5/2/2016
925-267 Pittsburg Multiple N/A
925-268 Moraga Multiple N/A
925-269 Martinez Multiple N/A
925-270 Concord Multiple N/A
925-271 Pleasanton Multiple N/A
925-272 Danville Multiple N/A
925-273 Livermore Multiple N/A
925-274 Walnut Creek Pacific Bell N/A
925-275 Bishop Ranch Multiple N/A
925-276 Clayton Multiple N/A
925-277 Bishop Ranch Pacific Bell N/A
925-278 Walnut Creek Multiple 10/24/2013
925-279 Walnut Creek Pacific Bell N/A
925-280 Walnut Creek Pacific Bell N/A
925-281 Antioch Onvoy N/A
925-282 Lafayette Multiple N/A
925-283 Lafayette Pacific Bell N/A
925-284 Lafayette Pacific Bell N/A
925-285 Walnut Creek New Cingular Wireless PCS N/A
925-286 Walnut Creek New Cingular Wireless PCS N/A
925-287 Walnut Creek Pacific Bell N/A
925-288 Concord Pacific Bell N/A
925-289 Walnut Creek Multiple 2/23/2009
925-290 Livermore Multiple N/A
925-291 Pittsburg West Multiple N/A
925-292 Livermore Multiple N/A
925-293 Martinez Multiple N/A
925-294 Livermore Multiple N/A
925-295 Walnut Creek Pacific Bell N/A
925-296 Walnut Creek Pacific Bell N/A
925-297 Lafayette Multiple N/A
925-298 Lafayette Multiple N/A
925-299 Lafayette Pacific Bell N/A
925-300-XXXX --- 925-399-XXXX
NPANXX Area served[1] Provider[2] Date[3]
925-300 Walnut Creek Multiple N/A
925-301 Antioch Multiple N/A
925-302 Bishop Ranch Multiple N/A
925-303 Antioch Multiple N/A
925-304 Clayton Multiple N/A
925-305 Concord Multiple N/A
925-306 East Contra Costa Multiple 1/13/2017
925-307 Dublin-San Ramon Multiple N/A
925-308 East Contra Costa Multiple N/A
925-309 Danville Multiple N/A
925-310 Lafayette Multiple N/A
925-312 Antioch USA Mobility Wireless N/A
925-313 Martinez Pacific Bell N/A
925-314 Danville Multiple N/A
925-315 Livermore Multiple N/A
925-316 Martinez Multiple N/A
925-317 Orinda Multiple N/A
925-318 Pittsburg Multiple N/A
925-319 Sunol Multiple N/A
925-320 Moraga Multiple 3/27/2001
925-321 Livermore New Cingular Wireless PCS 11/30/2001
925-322 Walnut Creek Multiple 5/10/2011
925-323 Walnut Creek New Cingular Wireless PCS N/A
925-324 Walnut Creek Cellco Partnership 8/21/2002
925-325 Antioch T-Mobile USA 12/28/2001
925-326 Concord Multiple N/A
925-327 Bishop Ranch Multiple N/A
925-328 Bishop Ranch Pacific Bell N/A
925-329 Antioch Multiple 9/8/2014
925-330 Walnut Creek New Cingular Wireless PCS 11/30/2001
925-331 Antioch Multiple 7/17/2001
925-332 Concord Multiple 10/4/2012
925-333 Walnut Creek American Messaging Services N/A
925-334 Concord Multiple 7/19/2011
925-335 Martinez Multiple N/A
925-336 Dublin-San Ramon Multiple 12/28/2001
925-337 Livermore Multiple 1/28/2002
925-338 Concord Multiple 7/22/2011
925-339 Livermore MetroPCS 9/21/2001
925-340 Walnut Creek USA Mobility Wireless N/A
925-341 Livermore Multiple 4/21/2020
925-342 Walnut Creek Multiple 12/07/2023
925-343 Pleasanton American Messaging Services N/A
925-344 Livermore Multiple N/A
925-345 Danville American Messaging Services N/A
925-346 Concord American Messaging Services N/A
925-347 Livermore American Messaging Services N/A
925-348 Concord Multiple 1/28/2002
925-349 Concord Multiple N/A
925-350 Antioch Multiple 9/13/2011
925-351 Pleasanton Multiple N/A
925-352 Pleasanton Multiple N/A
925-353 Pleasanton Multiple 1/28/2002
925-354 Antioch Multiple 1/28/2002
925-355 Bishop Ranch Multiple N/A
925-356 Concord Multiple N/A
925-357 Walnut Creek Multiple 9/13/2011
925-358 Bishop Ranch Pacific Bell N/A
925-359 Bishop Ranch Multiple N/A
925-360 Walnut Creek New Cingular Wireless PCS N/A
925-361 Dublin-San Ramon Multiple N/A
925-362 Danville Multiple N/A
925-363 Concord Pacific Bell N/A
925-364 Dublin-San Ramon Multiple N/A
925-365 Bishop Ranch Multiple N/A
925-366 Pleasanton Multiple N/A
925-367 Pleasanton Multiple N/A
925-368 Pleasanton Multiple N/A
925-369 Martinez Multiple N/A
925-370 Martinez Pacific Bell N/A
925-371 Livermore Multiple N/A
925-372 Martinez Pacific Bell N/A
925-373 Livermore Pacific Bell N/A
925-374 Martinez Multiple N/A
925-375 Concord Multiple 6/29/2016
925-376 Moraga Pacific Bell N/A
925-377 Moraga Multiple N/A
925-378 Walnut Creek Multiple 12/11/2014
925-379 Pleasanton Level 3 Telecom Of California 11/10/2014
925-380 Bishop Ranch Multiple N/A
925-381 Concord New Cingular Wireless PCS N/A
925-382 Antioch Multiple N/A
925-383 Concord MetroPCS N/A
925-384 Antioch Multiple 12/5/2014
925-385 Lafayette Multiple N/A
925-386 Orinda Multiple N/A
925-387 Martinez Multiple N/A
925-388 Moraga Multiple N/A
925-389 Danville Multiple 11/30/2001
925-390 East Contra Costa Multiple 4/11/2016
925-391 Concord Multiple 11/25/2013
925-392 East Contra Costa Multiple N/A
925-393 Walnut Creek Multiple 6/16/2015
925-394 Bishop Ranch Multiple N/A
925-395 Walnut Creek Multiple N/A
925-396 Pleasanton Onvoy N/A
925-397 Pleasanton Onvoy N/A
925-398 Pleasanton Multiple N/A
925-399 Pleasanton Multiple N/A
925-400-XXXX --- 925-499-XXXX
NPANXX Area served[1] Provider[2] Date[3]
925-400 Pleasanton Multiple N/A
925-401 Pleasanton Multiple N/A
925-402 Orinda Multiple N/A
925-403 Lafayette Multiple N/A
925-404 Dublin-San Ramon Multiple N/A
925-405 Concord Multiple N/A
925-406 Danville Multiple N/A
925-407 Walnut Creek Multiple N/A
925-408 Concord New Cingular Wireless PCS N/A
925-409 Livermore Multiple 8/18/2017
925-410 Pleasanton U.S. Telepacific Corp. 7/14/2020
925-412 Concord Multiple 11/19/2018
925-413 Dublin-San Ramon New Cingular Wireless PCS N/A
925-414 Concord Multiple 7/31/2019
925-415 Bishop Ranch Multiple N/A
925-416 Pleasanton Multiple N/A
925-417 Pleasanton Multiple N/A
925-418 East Contra Costa Multiple N/A
925-419 Concord Multiple 10/02/2023
925-420 East Contra Costa Multiple N/A
925-421 Concord Multiple 1/27/2012
925-422 Livermore Pacific Bell N/A
925-423 Livermore Pacific Bell N/A
925-424 Livermore Pacific Bell N/A
925-425 Pleasanton Multiple N/A
925-426 Pleasanton Pacific Bell N/A
925-427 Pittsburg Pacific Bell N/A
925-428 Antioch Multiple 4/19/2013
925-429 Concord Multiple N/A
925-430 Walnut Creek Multiple 10/9/2019
925-431 Pittsburg Multiple N/A
925-432 Pittsburg Pacific Bell N/A
925-433 Walnut Creek Multiple 11/2/2015
925-434 Antioch Multiple N/A
925-435 Concord Multiple N/A
925-436 Antioch Multiple 8/30/2016
925-437 Antioch New Cingular Wireless PCS N/A
925-438 Orinda Multiple N/A
925-439 Pittsburg Pacific Bell N/A
925-440 Walnut Creek Multiple 11/2/2018
925-441 Antioch Multiple 6/29/2022
925-443 Livermore Pacific Bell N/A
925-444 Lafayette Multiple N/A
925-445 Antioch Multiple 4/5/2021
925-446 Concord Multiple 6/25/2012
925-447 Livermore Pacific Bell N/A
925-448 Walnut Creek Multiple 4/28/2014
925-449 Livermore Pacific Bell N/A
925-450 East Contra Costa Multiple 6/26/2020
925-451 Walnut Creek New Cingular Wireless PCS N/A
925-452 Dublin-San Ramon Multiple N/A
925-453 Livermore Multiple N/A
925-454 Livermore Pacific Bell N/A
925-455 Livermore Multiple N/A
925-456 Livermore Multiple N/A
925-457 Walnut Creek T-Mobile USA N/A
925-458 Pittsburg West Multiple N/A
925-459 Concord Multiple N/A
925-460 Pleasanton Multiple N/A
925-461 Pleasanton Pacific Bell N/A
925-462 Pleasanton Pacific Bell N/A
925-463 Pleasanton Pacific Bell N/A
925-464 Walnut Creek Multiple 8/16/2012
925-465 Walnut Creek Level 3 Communications N/A
925-466 Concord Multiple 9/17/2020
925-467 Pleasanton Multiple N/A
925-468 Pleasanton Multiple N/A
925-469 Pleasanton Multiple N/A
925-470 Antioch Multiple N/A
925-471 Concord Multiple 8/25/2014
925-472 Walnut Creek Pacific Bell N/A
925-473 Pittsburg Pacific Bell N/A
925-474 Pleasanton Multiple N/A
925-475 Pleasanton Multiple N/A
925-476 Walnut Creek Multiple N/A
925-477 Antioch Multiple 1/18/2019
925-478 Walnut Creek Multiple N/A
925-479 Dublin-San Ramon Multiple N/A
925-480 Bishop Ranch Multiple N/A
925-481 Antioch Multiple 3/24/2014
925-482 Walnut Creek Multiple N/A
925-483 Concord Multiple 4/23/2015
925-484 Pleasanton Pacific Bell N/A
925-485 Pleasanton Pacific Bell N/A
925-486 Danville Multiple 04/29/2024
925-487 Dublin-San Ramon New Cingular Wireless PCS N/A
925-488 Walnut Creek Multiple 6/24/2019
925-489 Antioch Multiple 10/15/2020
925-490 Concord Multiple 5/23/2014
925-491 Antioch Multiple 10/02/2023
925-492 Pittsburg Multiple 9/24/2021
925-493 Livermore Multiple N/A
925-494 Concord Multiple 4/16/2015
925-495 Livermore Multiple 8/2/2016
925-496 Concord Multiple 12/23/2021
925-497 Concord MetroPCS 8/22/2001
925-498 Bishop Ranch Multiple N/A
925-499 Concord Multiple 12/26/2017
925-500-XXXX --- 925-599-XXXX
NPANXX Area served[1] Provider[2] Date[3]
925-500 Martinez Multiple N/A
925-501 Antioch Multiple 5/17/2022
925-502 Danville Multiple 7/21/2022
925-503 Antioch Multiple 3/23/2017
925-504 Pittsburg West Multiple 12/16/2022
925-505 Livermore Multiple 7/28/2022
925-506 Antioch Multiple 01/19/2023
925-507 Concord Multiple 01/04/2023
925-508 East Contra Costa Multiple 03/31/2023
925-509 Bishop Ranch USA Mobility Wireless N/A
925-510 Concord Multiple 3/23/2018
925-512 Walnut Creek Onvoy 10/02/2023
925-513 East Contra Costa Multiple N/A
925-514 Martinez Multiple 10/06/2023
925-515 Concord Multiple 11/11/2020
925-516 East Contra Costa Pacific Bell N/A
925-517 Pittsburg West Multiple 5/18/2001
925-518 Livermore Multiple N/A
925-519 Pleasanton Cellco Partnership N/A
925-520 Pleasanton Multiple N/A
925-521 Concord Multiple N/A
925-522 Antioch Multiple N/A
925-523 Pleasanton Multiple N/A
925-524 Clayton Multiple N/A
925-525 Livermore MetroPCS N/A
925-526 Pittsburg Multiple N/A
925-527 Walnut Creek Utility Telecom Group N/A
925-528 Orinda Multiple N/A
925-529 Antioch Multiple N/A
925-531 Lafayette Multiple 11/27/2023
925-532 Walnut Creek Multiple 3/17/2017
925-533 Livermore Multiple 9/17/2020
925-534 Livermore Level 3 Communications 8/6/2019
925-535 Pleasanton Multiple N/A
925-536 Concord Multiple 3/17/2017
925-537 Livermore Multiple 1/14/2022
925-538 Antioch Multiple 01/19/2024
925-539 Antioch Multiple 06/21/2024
925-540 Danville Multiple 11/20/2024
925-541 Livermore Shelcomm 09/12/2024
925-542 Walnut Creek Multiple 12/26/2017
925-543 Bishop Ranch Multiple N/A
925-544 Antioch Multiple 04/09/2025
925-545 Antioch Multiple 06/25/2025
925-546 Walnut Creek Multiple 1/7/2022
925-548 Dublin-San Ramon New Cingular Wireless PCS N/A
925-549 Dublin-San Ramon Multiple N/A
925-550 Antioch New Cingular Wireless PCS N/A
925-551 Dublin-San Ramon Multiple N/A
925-552 Danville Pacific Bell N/A
925-553 Danville Multiple N/A
925-556 Dublin-San Ramon Pacific Bell N/A
925-557 Dublin-San Ramon Multiple N/A
925-558 Dublin-San Ramon Multiple N/A
925-560 Dublin-San Ramon Multiple N/A
925-565 Antioch MetroPCS 9/21/2001
925-566 Concord Multiple N/A
925-567 Clayton Multiple 7/17/2001
925-568 Sunol Multiple N/A
925-570 Dublin-San Ramon Multiple N/A
925-571 Bishop Ranch North County Communication Corporation N/A
925-572 Pleasanton North County Communication Corporation N/A
925-573 Pittsburg North County Communication Corporation N/A
925-574 Dublin-San Ramon Multiple 6/27/2001
925-575 Danville Multiple N/A
925-577 Dublin-San Ramon Multiple 9/19/2001
925-578 East Contra Costa Multiple 11/3/2020
925-579 Livermore Multiple 4/24/2001
925-580 Pleasanton Multiple N/A
925-583 Livermore Multiple N/A
925-584 Antioch Multiple N/A
925-586 Concord Cellco Partnership N/A
925-587 Dublin-San Ramon Multiple N/A
925-588 Walnut Creek Multiple N/A
925-590 Bishop Ranch Multiple 6/23/2022
925-592 Moraga Multiple N/A
925-594 Danville Multiple 9/21/2001
925-595 Concord MetroPCS 5/18/2001
925-596 Pleasanton Multiple N/A
925-597 Pittsburg Multiple N/A
925-598 Pleasanton Pacific Bell N/A
925-599 Livermore Multiple 1/27/2021
925-600-XXXX --- 925-699-XXXX
NPANXX Area served[1] Provider[2] Date[3]
925-600 Pleasanton Pacific Bell N/A
925-602 Concord Pacific Bell N/A
925-603 Concord Multiple N/A
925-605 Livermore Multiple N/A
925-606 Livermore Pacific Bell N/A
925-608 Martinez Multiple 3/1/2001
925-609 Concord Multiple N/A
925-621 Pleasanton Multiple 4/26/2001
925-623 Pleasanton Multiple N/A
925-625 East Contra Costa Pacific Bell N/A
925-626 East Contra Costa Multiple N/A
925-627 Walnut Creek Multiple 3/27/2001
925-628 Antioch Cellco Partnership N/A
925-631 Moraga Multiple N/A
925-633 Concord Multiple 8/5/2021
925-634 East Contra Costa Pacific Bell N/A
925-635 Pittsburg Multiple N/A
925-639 Walnut Creek T-Mobile USA 10/18/2001
925-640 Dublin-San Ramon New Cingular Wireless PCS N/A
925-642 Antioch New Cingular Wireless PCS N/A
925-643 Pittsburg West Multiple 5/21/2001
925-644 Concord Multiple 7/13/2021
925-646 Concord Pacific Bell N/A
925-648 Danville Multiple N/A
925-655 Concord Multiple 3/20/2019
925-658 Walnut Creek Multiple N/A
925-659 Bishop Ranch Multiple N/A
925-660 Pleasanton Multiple N/A
925-663 Sunol Multiple N/A
925-664 Pittsburg West Multiple N/A
925-665 Pittsburg Multiple N/A
925-666 East Contra Costa Multiple N/A
925-667 Livermore Multiple 5/18/2001
925-671 Concord Pacific Bell N/A
925-672 Clayton Pacific Bell N/A
925-673 Clayton Multiple N/A
925-674 Concord Pacific Bell N/A
925-675 Concord Pacific Bell N/A
925-676 Concord Pacific Bell N/A
925-677 Concord Multiple N/A
925-678 Danville Multiple N/A
925-679 East Contra Costa Multiple N/A
925-680 Concord Pacific Bell N/A
925-681 Concord Multiple N/A
925-682 Concord Pacific Bell N/A
925-683 Danville New Cingular Wireless PCS N/A
925-684 East Contra Costa Multiple N/A
925-685 Concord Pacific Bell N/A
925-686 Concord Pacific Bell N/A
925-687 Concord Pacific Bell N/A
925-688 Concord Multiple N/A
925-689 Concord Pacific Bell N/A
925-690 Clayton Multiple N/A
925-691 Concord Pacific Bell N/A
925-692 Concord Pacific Bell N/A
925-693 Clayton Multiple N/A
925-694 Pleasanton Multiple N/A
925-695 Concord Multiple N/A
925-698 Pittsburg New Cingular Wireless PCS N/A
925-699 Pleasanton New Cingular Wireless PCS N/A
925-701-XXXX --- 925-799-XXXX
NPANXX Area served[1] Provider[2] Date[3]
925-701 Pleasanton Multiple N/A
925-705 Walnut Creek Multiple 8/22/2001
925-706 Antioch Pacific Bell N/A
925-708 Walnut Creek Cellco Partnership 1/26/2001
925-709 Pittsburg West Multiple N/A
925-718 Danville Multiple 1/26/2001
925-719 Dublin-San Ramon Cellco Partnership 4/16/2002
925-722 Walnut Creek Multiple 7/7/2021
925-723 Martinez Multiple N/A
925-724 Livermore Multiple N/A
925-725 Danville Multiple N/A
925-726 Concord Multiple N/A
925-727 Antioch Multiple N/A
925-730 Pleasanton Multiple N/A
925-732 Antioch Multiple N/A
925-733 Danville Multiple 8/5/2021
925-734 Pleasanton Multiple N/A
925-735 Bishop Ranch Multiple N/A
925-736 Danville Pacific Bell N/A
925-737 Pleasanton Pacific Bell N/A
925-738 Pleasanton Multiple N/A
925-743 Danville Pacific Bell N/A
925-744 Walnut Creek Multiple 11/13/2020
925-746 Walnut Creek Pacific Bell N/A
925-750 Pleasanton Multiple N/A
925-752 Antioch Multiple N/A
925-753 Antioch Pacific Bell N/A
925-754 Antioch Pacific Bell N/A
925-755 Antioch Multiple N/A
925-756 Antioch Pacific Bell N/A
925-757 Antioch Pacific Bell N/A
925-758 Livermore Multiple 3/20/2019
925-759 Antioch New Cingular Wireless PCS N/A
925-762 Bishop Ranch Pacific Bell N/A
925-765 Walnut Creek Multiple N/A
925-766 Walnut Creek Multiple N/A
925-768 Concord Cellco Partnership 6/25/2001
925-771 Concord Multiple 3/1/2001
925-775 Antioch Multiple N/A
925-776 Antioch Pacific Bell N/A
925-777 Antioch Pacific Bell N/A
925-778 Antioch Pacific Bell N/A
925-779 Antioch Pacific Bell N/A
925-783 Antioch Cellco Partnership N/A
925-784 Livermore Cellco Partnership N/A
925-785 Dublin-San Ramon Cellco Partnership N/A
925-786 Bishop Ranch Cellco Partnership N/A
925-787 Concord Cellco Partnership N/A
925-788 Walnut Creek Cellco Partnership N/A
925-789 Sunol Multiple N/A
925-790 Bishop Ranch Multiple 1/26/2001
925-791 Danville Multiple 7/16/2001
925-794 Moraga Multiple 7/17/2001
925-798 Concord Pacific Bell N/A
925-799 Pittsburg Multiple 3/20/2019
925-800-XXXX --- 925-899-XXXX
NPANXX Area served[1] Provider[2] Date[3]
925-800 Livermore Multiple N/A
925-803 Dublin-San Ramon Pacific Bell N/A
925-804 Bishop Ranch Multiple N/A
925-806 Bishop Ranch Pacific Bell N/A
925-807 Bishop Ranch Multiple N/A
925-808 Concord Multiple N/A
925-809 East Contra Costa Multiple 3/1/2001
925-812 Martinez Multiple 9/21/2001
925-813 Antioch Multiple 8/21/2002
925-815 Bishop Ranch Multiple N/A
925-817 Walnut Creek Multiple N/A
925-818 Walnut Creek New Cingular Wireless PCS N/A
925-819 Dublin-San Ramon Multiple N/A
925-820 Danville Pacific Bell N/A
925-822 Concord Multiple N/A
925-823 Bishop Ranch Pacific Bell N/A
925-824 Bishop Ranch Pacific Bell N/A
925-825 Concord Pacific Bell N/A
925-826 Concord Multiple N/A
925-827 Concord Pacific Bell N/A
925-828 Dublin-San Ramon Pacific Bell N/A
925-829 Dublin-San Ramon Pacific Bell N/A
925-830 Bishop Ranch Multiple N/A
925-831 Danville Pacific Bell N/A
925-832 East Contra Costa Multiple 1/31/2022
925-833 Dublin-San Ramon Pacific Bell N/A
925-834 Antioch Multiple 9/29/2021
925-835 Sunol Multiple N/A
925-837 Danville Pacific Bell N/A
925-838 Danville Pacific Bell N/A
925-839 Martinez Multiple 4/24/2001
925-842 Bishop Ranch Pacific Bell N/A
925-843 Bishop Ranch Level 3 Telecom Of California 5/20/2010
925-844 Clayton Multiple 7/17/2001
925-846 Pleasanton Pacific Bell N/A
925-847 Pleasanton Pacific Bell N/A
925-848 Antioch Multiple N/A
925-849 Concord Multiple N/A
925-852 Concord Multiple 4/24/2001
925-854 Danville Multiple N/A
925-855 Danville Pacific Bell N/A
925-856 Danville Multiple N/A
925-858 Dublin-San Ramon New Cingular Wireless PCS N/A
925-860 Sunol Multiple N/A
925-862 Sunol Multiple N/A
925-864 Concord MetroPCS N/A
925-866 Bishop Ranch Pacific Bell N/A
925-867 Bishop Ranch Pacific Bell N/A
925-871 Lafayette Multiple N/A
925-872 Pleasanton Cellco Partnership N/A
925-875 Dublin-San Ramon Multiple N/A
925-876 Walnut Creek New Cingular Wireless PCS N/A
925-877 Antioch Multiple 3/20/2019
925-878 Lafayette Multiple N/A
925-880 East Contra Costa Multiple 7/13/2021
925-884 Bishop Ranch Multiple N/A
925-885 Orinda Multiple N/A
925-886 Danville Multiple N/A
925-887 Concord Multiple N/A
925-888 Moraga Multiple N/A
925-889 Clayton Multiple N/A
925-890 Concord New Cingular Wireless PCS N/A
925-891 Walnut Creek Multiple N/A
925-892 Pleasanton Multiple N/A
925-895 Dublin-San Ramon Multiple N/A
925-897 Dublin-San Ramon Multiple 9/17/2021
925-899 Walnut Creek New Cingular Wireless PCS N/A
925-900-XXXX --- 925-999-XXXX
NPANXX Area served[1] Provider[2] Date[3]
925-900 Lafayette Multiple N/A
925-901 Bishop Ranch Pacific Bell N/A
925-904 Bishop Ranch Pacific Bell N/A
925-905 Dublin-San Ramon Multiple N/A
925-906 Walnut Creek Pacific Bell N/A
925-913 Bishop Ranch Multiple 9/20/2002
925-914 Clayton Multiple 9/20/2002
925-915 Danville Multiple 9/20/2002
925-917 Martinez Multiple 9/20/2002
925-918 Pleasanton Multiple N/A
925-920 Walnut Creek USA Mobility Wireless N/A
925-922 Pleasanton Multiple 9/20/2002
925-924 Pleasanton Multiple N/A
925-925 Concord Onvoy 9/27/2022
925-926 Walnut Creek Pacific Bell N/A
925-927 Walnut Creek Pacific Bell N/A
925-930 Walnut Creek Pacific Bell N/A
925-931 Pleasanton Multiple N/A
925-932 Walnut Creek Pacific Bell N/A
925-933 Walnut Creek Pacific Bell N/A
925-934 Walnut Creek Pacific Bell N/A
925-935 Walnut Creek Pacific Bell N/A
925-937 Walnut Creek Pacific Bell N/A
925-938 Walnut Creek Pacific Bell N/A
925-939 Walnut Creek Pacific Bell N/A
925-940 Walnut Creek Onvoy N/A
925-941 Walnut Creek Multiple N/A
925-942 Walnut Creek Pacific Bell N/A
925-943 Walnut Creek Pacific Bell N/A
925-944 Walnut Creek Pacific Bell N/A
925-945 Walnut Creek Pacific Bell N/A
925-946 Walnut Creek Pacific Bell N/A
925-947 Walnut Creek Pacific Bell N/A
925-948 Walnut Creek Multiple N/A
925-949 Walnut Creek Multiple N/A
925-951 Walnut Creek Multiple N/A
925-952 Walnut Creek Multiple N/A
925-953 Walnut Creek Multiple N/A
925-954 Walnut Creek Multiple N/A
925-955 Walnut Creek Utility Telecom Group N/A
925-956 Walnut Creek Multiple N/A
925-957 Martinez Multiple N/A
925-960 Livermore Multiple N/A
925-961 Livermore Multiple N/A
925-962 Lafayette Multiple N/A
925-963 Pleasanton New Cingular Wireless PCS N/A
925-964 Danville Multiple N/A
925-965 Pleasanton Multiple N/A
925-966 Antioch Multiple 4/18/2021
925-967 Dublin-San Ramon Multiple N/A
925-968 Bishop Ranch Multiple N/A
925-969 Concord Pacific Bell N/A
925-973 Bishop Ranch Multiple N/A
925-974 Walnut Creek Pacific Bell N/A
925-975 Walnut Creek Pacific Bell N/A
925-977 Walnut Creek Pacific Bell N/A
925-978 Antioch Multiple N/A
925-979 Walnut Creek Multiple N/A
925-980 Livermore New Cingular Wireless PCS N/A
925-983 Bishop Ranch Multiple N/A
925-984 Danville Multiple N/A
925-988 Walnut Creek Pacific Bell N/A
925-989 Pleasanton Cellco Partnership N/A
925-990 Sunol Utility Telecom Group N/A
925-993 Clayton Multiple 3/26/2001
925-995 Concord Multiple 01/04/2024
925-997 Dublin-San Ramon New Cingular Wireless PCS N/A
925-998 Pleasanton New Cingular Wireless PCS N/A
925-999 Dublin-San Ramon Multiple N/A
  1. 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.
  2. A single provider refers to the original company controlling a whole NPA-NXX block (10,000 phone numbers). With Number Pooling, NPA-NXX blocks can be split into ten 1,000 phone number blocks and handed over to other service providers (available in the USA and Puerto Rico).
  3. Assignment date. N/A: unavailable date or central office code assigned before 2001.
  4. NXX prefixes last updated: December 15, 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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