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
925-402 ORINDA, CA ALLEGIANCE TELECOM, INC. - CA
925-403 LAFAYETTE, CA ALLEGIANCE TELECOM, INC. - CA
925-404 Dublin / San Ramon, CA ALLEGIANCE TELECOM, INC. - CA
925-405 CONCORD, CA ALLEGIANCE TELECOM, INC. - CA
925-406 DANVILLE, CA ALLEGIANCE TELECOM, INC. - CA
925-407 Walnut Creek, CA ALLEGIANCE TELECOM, INC. - CA
925-408 CONCORD, CA NEW CINGULAR WIRELESS PCS, LLC
925-410 MARTINEZ, CA AMERICAN MESSAGING SERVICES, LLC
925-413 Dublin / San Ramon, CA NEW CINGULAR WIRELESS PCS, LLC
925-415 Bishop's Ranch, CA BROADWING COMMUNICATIONS, LLC - CA
925-416 PLEASANTON, CA PACIFIC BELL
925-417 PLEASANTON, CA PACIFIC BELL
925-418 ECONTRCOST, CA BROADWING COMMUNICATIONS, LLC - CA
925-419 Dublin / San Ramon, CA AMERICAN MESSAGING SERVICES, LLC
925-420 ECONTRCOST, CA O1 COMMUNICATIONS, INC. - CA
925-421 CONCORD, CA BANDWIDTH.COM CLEC, LLC - CA
925-422 LIVERMORE, CA PACIFIC BELL
925-423 LIVERMORE, CA PACIFIC BELL
925-424 LIVERMORE, CA PACIFIC BELL
925-425 PLEASANTON, CA TELEPORT COMMUNICATIONS GROUP - SAN FRANCISCO
925-426 PLEASANTON, CA PACIFIC BELL
925-427 PITTSBURG, CA PACIFIC BELL
925-428 ANTIOCH, CA T-MOBILE USA, INC.
925-429 CONCORD, CA BROADWING COMMUNICATIONS, LLC - CA
925-431 PITTSBURG, CA PACIFIC BELL
925-432 PITTSBURG, CA PACIFIC BELL
925-433 Walnut Creek, CA COMCAST PHONE OF CALIFORNIA, LLC - CA
925-434 ANTIOCH, CA PEERLESS NETWORK OF CALIFORNIA, LLC - CA
925-435 CONCORD, CA T-MOBILE USA, INC.
925-436 ANTIOCH, CA T-MOBILE USA, INC.
925-437 ANTIOCH, CA NEW CINGULAR WIRELESS PCS, LLC
925-438 ORINDA, CA U.S. TELEPACIFIC CORP. - CA
925-439 PITTSBURG, CA PACIFIC BELL
925-443 LIVERMORE, CA PACIFIC BELL
925-444 LAFAYETTE, CA U.S. TELEPACIFIC CORP. - CA
925-446 CONCORD, CA SPRINT SPECTRUM L.P.
925-447 LIVERMORE, CA PACIFIC BELL
925-448 Walnut Creek, CA CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA
925-449 LIVERMORE, CA PACIFIC BELL
925-451 Walnut Creek, CA NEW CINGULAR WIRELESS PCS, LLC
925-452 Dublin / San Ramon, CA U.S. TELEPACIFIC CORP. - CA
925-453 LIVERMORE, CA MCIMETRO ACCESS TRANSMISSION SERVICES LLC
925-454 LIVERMORE, CA PACIFIC BELL
925-455 LIVERMORE, CA PACIFIC BELL
925-456 LIVERMORE, CA PACIFIC BELL
925-457 Walnut Creek, CA SPRINT SPECTRUM L.P.
925-458 Pittsburg, CA PACIFIC BELL
925-459 CONCORD, CA BROADWING COMMUNICATIONS, LLC - CA
925-460 PLEASANTON, CA PACIFIC BELL
925-461 PLEASANTON, CA PACIFIC BELL
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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