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
925-634 ECONTRCOST, CA PACIFIC BELL
925-635 PITTSBURG, CA TELEPORT COMMUNICATIONS GROUP - SAN FRANCISCO
925-639 Walnut Creek, CA T-MOBILE USA, INC.
925-640 Dublin / San Ramon, CA NEW CINGULAR WIRELESS PCS, LLC
925-642 ANTIOCH, CA NEW CINGULAR WIRELESS PCS, LLC
925-643 Pittsburg, CA U.S. TELEPACIFIC CORP. - CA
925-646 CONCORD, CA PACIFIC BELL
925-648 DANVILLE, CA PACIFIC BELL
925-658 Walnut Creek, CA TELEPORT COMMUNICATIONS GROUP - SAN FRANCISCO
925-659 Bishop's Ranch, CA TELEPORT COMMUNICATIONS GROUP - SAN FRANCISCO
925-660 PLEASANTON, CA LEVEL 3 TELECOM OF CALIFORNIA, LP - CA
925-663 SUNOL, CA TNCI-OP-CO - CA
925-664 Pittsburg, CA TNCI-OP-CO - CA
925-665 PITTSBURG, CA TNCI-OP-CO - CA
925-666 ECONTRCOST, CA TNCI-OP-CO - CA
925-667 LIVERMORE, CA U.S. TELEPACIFIC CORP. - CA
925-671 CONCORD, CA PACIFIC BELL
925-672 CLAYTON, CA PACIFIC BELL
925-673 CLAYTON, CA PACIFIC BELL
925-674 CONCORD, CA PACIFIC BELL
925-675 CONCORD, CA PACIFIC BELL
925-676 CONCORD, CA PACIFIC BELL
925-677 CONCORD, CA PACIFIC BELL
925-678 DANVILLE, CA U.S. TELEPACIFIC CORP. - CA
925-679 ECONTRCOST, CA PACIFIC BELL
925-680 CONCORD, CA PACIFIC BELL
925-681 CONCORD, CA PACIFIC BELL
925-682 CONCORD, CA PACIFIC BELL
925-683 DANVILLE, CA NEW CINGULAR WIRELESS PCS, LLC
925-684 ECONTRCOST, CA PACIFIC BELL
925-685 CONCORD, CA PACIFIC BELL
925-686 CONCORD, CA PACIFIC BELL
925-687 CONCORD, CA PACIFIC BELL
925-688 CONCORD, CA PACIFIC BELL
925-689 CONCORD, CA PACIFIC BELL
925-690 CLAYTON, CA MCIMETRO ACCESS TRANSMISSION SERVICES LLC
925-691 CONCORD, CA PACIFIC BELL
925-692 CONCORD, CA PACIFIC BELL
925-693 CLAYTON, CA TELEPORT COMMUNICATIONS GROUP - SAN FRANCISCO
925-694 PLEASANTON, CA MCIMETRO ACCESS TRANSMISSION SERVICES LLC
925-695 CONCORD, CA MPOWER COMMUNICATIONS CORP - CA
925-698 PITTSBURG, CA NEW CINGULAR WIRELESS PCS, LLC
925-699 PLEASANTON, CA NEW CINGULAR WIRELESS PCS, LLC
925-701 PLEASANTON, CA U.S. TELEPACIFIC CORP. - CA
925-705 Walnut Creek, CA METRO PCS, INC.
925-706 ANTIOCH, CA PACIFIC BELL
925-708 Walnut Creek, CA CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA
925-709 Pittsburg, CA PACIFIC BELL
925-718 DANVILLE, CA O1 COMMUNICATIONS, INC. - CA
925-719 Dublin / San Ramon, CA CELLCO PARTNERSHIP DBA VERIZON WIRELESS - 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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