National Phone Number Registry NPNR

Area Code 925 Location

Area code 925 is currently assigned for use in California since Mar 14, 1998. This area code originated from the 510 area code previously by means of area code split or overlay. View all phone prefixes used in area code 925 or other area codes in California.

(925)
Enter 7-digit phone number for area code 925 or the complete 10-digit phone number

Phone Prefixes for Area Code 925

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Area code Location Company / Service Provider
925-352 PLEASANTON, CA SPRINT SPECTRUM L.P.
925-353 PLEASANTON, CA NEW CINGULAR WIRELESS PCS, LLC
925-354 ANTIOCH, CA NEW CINGULAR WIRELESS PCS, LLC
925-355 Bishop's Ranch, CA PACIFIC BELL
925-356 CONCORD, CA PACIFIC BELL
925-357 Walnut Creek, CA LEVEL 3 COMMUNICATIONS, LLC - CA
925-358 Bishop's Ranch, CA PACIFIC BELL
925-359 Bishop's Ranch, CA MCIMETRO ACCESS TRANSMISSION SERVICES LLC
925-360 Walnut Creek, CA NEW CINGULAR WIRELESS PCS, LLC
925-361 Dublin / San Ramon, CA TELEPORT COMMUNICATIONS GROUP - SAN FRANCISCO
925-362 DANVILLE, CA PACIFIC BELL
925-363 CONCORD, CA PACIFIC BELL
925-364 Dublin / San Ramon, CA MCI WORLDCOM COMMUNICATIONS, INC., CA
925-365 Bishop's Ranch, CA TELEPORT COMMUNICATIONS GROUP - SAN FRANCISCO
925-366 PLEASANTON, CA SPRINT SPECTRUM L.P.
925-367 PLEASANTON, CA SPRINT SPECTRUM L.P.
925-368 PLEASANTON, CA SPRINT SPECTRUM L.P.
925-369 MARTINEZ, CA TNCI-OP-CO - CA
925-370 MARTINEZ, CA PACIFIC BELL
925-371 LIVERMORE, CA PACIFIC BELL
925-372 MARTINEZ, CA PACIFIC BELL
925-373 LIVERMORE, CA PACIFIC BELL
925-374 MARTINEZ, CA ALLEGIANCE TELECOM, INC. - CA
925-375 CONCORD, CA CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA
925-376 MORAGA, CA PACIFIC BELL
925-377 MORAGA, CA PACIFIC BELL
925-378 Walnut Creek, CA CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA
925-379 PLEASANTON, CA LEVEL 3 TELECOM OF CALIFORNIA, LP - CA
925-380 Bishop's Ranch, CA LEVEL 3 COMMUNICATIONS, LLC - CA
925-381 CONCORD, CA NEW CINGULAR WIRELESS PCS, LLC
925-382 ANTIOCH, CA SPRINT SPECTRUM L.P.
925-383 CONCORD, CA SPRINT SPECTRUM L.P.
925-384 ANTIOCH, CA AT&T CORP.
925-385 LAFAYETTE, CA TELEPORT COMMUNICATIONS GROUP - SAN FRANCISCO
925-386 ORINDA, CA TELEPORT COMMUNICATIONS GROUP - SAN FRANCISCO
925-387 MARTINEZ, CA TELEPORT COMMUNICATIONS GROUP - SAN FRANCISCO
925-388 MORAGA, CA TELEPORT COMMUNICATIONS GROUP - SAN FRANCISCO
925-389 DANVILLE, CA NEW CINGULAR WIRELESS PCS, LLC
925-390 ECONTRCOST, CA NEW CINGULAR WIRELESS PCS, LLC
925-391 CONCORD, CA LEVEL 3 COMMUNICATIONS, LLC - CA
925-392 ECONTRCOST, CA TELEPORT COMMUNICATIONS GROUP - SAN FRANCISCO
925-393 Walnut Creek, CA ONVOY, LLC - CA
925-394 Bishop's Ranch, CA GLOBAL CROSSING LOCAL SERVICES, INC.-CA
925-395 Walnut Creek, CA AT&T LOCAL
925-396 PLEASANTON, CA TNCI-OP-CO - CA
925-397 PLEASANTON, CA TNCI-OP-CO - CA
925-398 PLEASANTON, CA TELEPORT COMMUNICATIONS GROUP - SAN FRANCISCO
925-399 PLEASANTON, CA COMCAST PHONE OF CALIFORNIA, LLC - CA
925-400 PLEASANTON, CA O1 COMMUNICATIONS, INC. - CA
925-401 PLEASANTON, CA ALLEGIANCE TELECOM, INC. - CA
New numbers being added to 925 area code
Effective: 05/19/2017
925-503 in ANTIOCH, CA
T-MOBILE USA, INC.
Effective: 05/01/2017
925-532 in WALNUT CREEK, CA
TELNYX LLC
Effective: 05/01/2017
925-536 in CONCORD, CA
TELNYX LLC
925 Area Code Information
Type of code: General Purpose Code
Location: CA - US
Time zone: P
Assigned for use: Yes
Code in service: Yes
Service date: March 14, 1998
In jeopardy: No
Relief in progress: No
NPA Relief status:
Code assignable: Yes
Geographic or
non-geographic:
G
Reserved for future use: No
Planning letter(s): 080 061
Overlay code: No
Overlay complex:
Dialing plan Standard Permissive
Home local calls: 7D 1+10D
Foreign local calls: 1+10D NA
Home toll calls: 7D 1+10D
Foreign toll calls: 1+10D -
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