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
925-543 Bishop's Ranch, CA PACIFIC BELL
925-548 Dublin / San Ramon, CA NEW CINGULAR WIRELESS PCS, LLC
925-549 Dublin / San Ramon, CA NEW CINGULAR WIRELESS PCS, LLC
925-550 ANTIOCH, CA NEW CINGULAR WIRELESS PCS, LLC
925-551 Dublin / San Ramon, CA PACIFIC BELL
925-552 DANVILLE, CA PACIFIC BELL
925-553 DANVILLE, CA XO CALIFORNIA, INC.
925-556 Dublin / San Ramon, CA PACIFIC BELL
925-557 Dublin / San Ramon, CA MCI WORLDCOM COMMUNICATIONS, INC., CA
925-558 Dublin / San Ramon, CA XO CALIFORNIA, INC.
925-560 Dublin / San Ramon, CA PACIFIC BELL
925-565 ANTIOCH, CA METRO PCS, INC.
925-566 CONCORD, CA AT&T LOCAL
925-567 CLAYTON, CA SPRINT SPECTRUM L.P.
925-568 SUNOL, CA TELEPORT COMMUNICATIONS GROUP - SAN FRANCISCO
925-570 Dublin / San Ramon, CA SPRINT SPECTRUM L.P.
925-571 Bishop's Ranch, CA NORTH COUNTY COMMUNICATIONS CORP. - CA
925-572 PLEASANTON, CA NORTH COUNTY COMMUNICATIONS CORP. - CA
925-573 PITTSBURG, CA NORTH COUNTY COMMUNICATIONS CORP. - CA
925-574 Dublin / San Ramon, CA U.S. TELEPACIFIC CORP. - CA
925-575 DANVILLE, CA SPRINT SPECTRUM L.P.
925-577 Dublin / San Ramon, CA T-MOBILE USA, INC.
925-579 LIVERMORE, CA ALLEGIANCE TELECOM, INC. - CA
925-580 PLEASANTON, CA SPRINT SPECTRUM L.P.
925-583 LIVERMORE, CA U.S. TELEPACIFIC CORP. - CA
925-584 ANTIOCH, CA SPRINT SPECTRUM L.P.
925-585 CONCORD, CA AMERICAN MESSAGING SERVICES, LLC
925-586 CONCORD, CA CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA
925-587 Dublin / San Ramon, CA MPOWER COMMUNICATIONS CORP - CA
925-588 Walnut Creek, CA MPOWER COMMUNICATIONS CORP - CA
925-592 MORAGA, CA MPOWER COMMUNICATIONS CORP - CA
925-594 DANVILLE, CA METRO PCS, INC.
925-595 CONCORD, CA SPRINT SPECTRUM L.P.
925-596 PLEASANTON, CA CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA
925-597 PITTSBURG, CA CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA
925-598 PLEASANTON, CA PACIFIC BELL
925-600 PLEASANTON, CA PACIFIC BELL
925-602 CONCORD, CA PACIFIC BELL
925-603 CONCORD, CA PACIFIC BELL
925-605 LIVERMORE, CA TNCI-OP-CO - CA
925-606 LIVERMORE, CA PACIFIC BELL
925-608 MARTINEZ, CA BROADWING COMMUNICATIONS, LLC - CA
925-609 CONCORD, CA PACIFIC BELL
925-621 PLEASANTON, CA U.S. TELEPACIFIC CORP. - CA
925-623 PLEASANTON, CA SPRINT SPECTRUM L.P.
925-625 ECONTRCOST, CA PACIFIC BELL
925-626 ECONTRCOST, CA MCIMETRO ACCESS TRANSMISSION SERVICES LLC
925-627 Walnut Creek, CA U.S. TELEPACIFIC CORP. - CA
925-628 ANTIOCH, CA CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA
925-631 MORAGA, 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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