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
925-301 ANTIOCH, CA O1 COMMUNICATIONS, INC. - CA
925-302 Bishop's Ranch, CA LEVEL 3 TELECOM OF CALIFORNIA, LP - CA
925-303 ANTIOCH, CA LEVEL 3 TELECOM OF CALIFORNIA, LP - CA
925-304 CLAYTON, CA LEVEL 3 COMMUNICATIONS, LLC - CA
925-305 CONCORD, CA LEVEL 3 TELECOM OF CALIFORNIA, LP - CA
925-306 ECONTRCOST, CA SONIC TELECOM, LLC - CA
925-307 Dublin / San Ramon, CA LEVEL 3 TELECOM OF CALIFORNIA, LP - CA
925-308 ECONTRCOST, CA LEVEL 3 TELECOM OF CALIFORNIA, LP - CA
925-309 DANVILLE, CA LEVEL 3 TELECOM OF CALIFORNIA, LP - CA
925-310 LAFAYETTE, CA LEVEL 3 TELECOM OF CALIFORNIA, LP - CA
925-312 ANTIOCH, CA USA MOBILITY WIRELESS, INC.
925-313 MARTINEZ, CA PACIFIC BELL
925-314 DANVILLE, CA PACIFIC BELL
925-315 LIVERMORE, CA LEVEL 3 TELECOM OF CALIFORNIA, LP - CA
925-316 MARTINEZ, CA LEVEL 3 COMMUNICATIONS, LLC - CA
925-317 ORINDA, CA O1 COMMUNICATIONS, INC. - CA
925-318 PITTSBURG, CA LEVEL 3 TELECOM OF CALIFORNIA, LP - CA
925-319 SUNOL, CA T-MOBILE USA, INC.
925-320 MORAGA, CA U.S. TELEPACIFIC CORP. - CA
925-321 LIVERMORE, CA NEW CINGULAR WIRELESS PCS, LLC
925-322 Walnut Creek, CA BANDWIDTH.COM CLEC, LLC - CA
925-323 Walnut Creek, CA NEW CINGULAR WIRELESS PCS, LLC
925-324 Walnut Creek, CA CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA
925-325 ANTIOCH, CA T-MOBILE USA, INC.
925-326 CONCORD, CA LEVEL 3 COMMUNICATIONS, LLC - CA
925-327 Bishop's Ranch, CA PACIFIC BELL
925-328 Bishop's Ranch, CA PACIFIC BELL
925-329 ANTIOCH, CA CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA
925-330 Walnut Creek, CA NEW CINGULAR WIRELESS PCS, LLC
925-331 ANTIOCH, CA U.S. TELEPACIFIC CORP. - CA
925-332 CONCORD, CA PEERLESS NETWORK OF CALIFORNIA, LLC - CA
925-333 Walnut Creek, CA AMERICAN MESSAGING SERVICES, LLC
925-334 CONCORD, CA CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA
925-335 MARTINEZ, CA PACIFIC BELL
925-336 Dublin / San Ramon, CA NEW CINGULAR WIRELESS PCS, LLC
925-337 LIVERMORE, CA CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA
925-338 CONCORD, CA BANDWIDTH.COM CLEC, LLC - CA
925-339 LIVERMORE, CA METRO PCS, INC.
925-340 Walnut Creek, CA USA MOBILITY WIRELESS, INC.
925-341 ANTIOCH, CA AMERICAN MESSAGING SERVICES, LLC
925-342 ANTIOCH, CA AMERICAN MESSAGING SERVICES, LLC
925-343 PLEASANTON, CA AMERICAN MESSAGING SERVICES, LLC
925-344 LIVERMORE, CA MPOWER COMMUNICATIONS CORP - CA
925-345 DANVILLE, CA AMERICAN MESSAGING SERVICES, LLC
925-346 CONCORD, CA AMERICAN MESSAGING SERVICES, LLC
925-347 LIVERMORE, CA AMERICAN MESSAGING SERVICES, LLC
925-348 CONCORD, CA NEW CINGULAR WIRELESS PCS, LLC
925-349 CONCORD, CA TELEPORT COMMUNICATIONS GROUP - SAN FRANCISCO
925-350 ANTIOCH, CA COMCAST PHONE OF CALIFORNIA, LLC - CA
925-351 PLEASANTON, CA SPRINT SPECTRUM L.P.
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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