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
925-809 ECONTRCOST, CA U.S. TELEPACIFIC CORP. - CA
925-812 MARTINEZ, CA METRO PCS, INC.
925-813 ANTIOCH, CA CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA
925-815 Bishop's Ranch, CA PACIFIC BELL
925-817 Walnut Creek, CA PACIFIC BELL
925-818 Walnut Creek, CA NEW CINGULAR WIRELESS PCS, LLC
925-819 Dublin / San Ramon, CA NEW CINGULAR WIRELESS PCS, LLC
925-820 DANVILLE, CA PACIFIC BELL
925-822 CONCORD, CA MCIMETRO ACCESS TRANSMISSION SERVICES LLC
925-823 Bishop's Ranch, CA PACIFIC BELL
925-824 Bishop's Ranch, CA PACIFIC BELL
925-825 CONCORD, CA PACIFIC BELL
925-826 CONCORD, CA MCI WORLDCOM COMMUNICATIONS, INC., CA
925-827 CONCORD, CA PACIFIC BELL
925-828 Dublin / San Ramon, CA PACIFIC BELL
925-829 Dublin / San Ramon, CA PACIFIC BELL
925-830 Bishop's Ranch, CA PACIFIC BELL
925-831 DANVILLE, CA PACIFIC BELL
925-833 Dublin / San Ramon, CA PACIFIC BELL
925-835 SUNOL, CA U.S. TELEPACIFIC CORP. - CA
925-837 DANVILLE, CA PACIFIC BELL
925-838 DANVILLE, CA PACIFIC BELL
925-839 MARTINEZ, CA U.S. TELEPACIFIC CORP. - CA
925-842 Bishop's Ranch, CA PACIFIC BELL
925-843 Bishop's Ranch, CA LEVEL 3 TELECOM OF CALIFORNIA, LP - CA
925-844 CLAYTON, CA U.S. TELEPACIFIC CORP. - CA
925-846 PLEASANTON, CA PACIFIC BELL
925-847 PLEASANTON, CA PACIFIC BELL
925-848 ANTIOCH, CA TNCI-OP-CO - CA
925-849 CONCORD, CA U.S. TELEPACIFIC CORP. - CA
925-852 CONCORD, CA XO CALIFORNIA, INC.
925-854 DANVILLE, CA MCI WORLDCOM COMMUNICATIONS, INC., CA
925-855 DANVILLE, CA PACIFIC BELL
925-856 DANVILLE, CA MCIMETRO ACCESS TRANSMISSION SERVICES LLC
925-858 Dublin / San Ramon, CA NEW CINGULAR WIRELESS PCS, LLC
925-860 SUNOL, CA XO CALIFORNIA, INC.
925-862 SUNOL, CA PACIFIC BELL
925-864 CONCORD, CA SPRINT SPECTRUM L.P.
925-866 Bishop's Ranch, CA PACIFIC BELL
925-867 Bishop's Ranch, CA PACIFIC BELL
925-871 LAFAYETTE, CA TNCI-OP-CO - CA
925-872 PLEASANTON, CA CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA
925-875 Dublin / San Ramon, CA PACIFIC BELL
925-876 Walnut Creek, CA NEW CINGULAR WIRELESS PCS, LLC
925-878 LAFAYETTE, CA SPRINT SPECTRUM L.P.
925-884 Bishop's Ranch, CA TNCI-OP-CO - CA
925-885 ORINDA, CA TNCI-OP-CO - CA
925-886 DANVILLE, CA TNCI-OP-CO - CA
925-887 CONCORD, CA TNCI-OP-CO - CA
925-888 MORAGA, CA TNCI-OP-CO - 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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