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
925-251 PLEASANTON, CA PACIFIC BELL
925-252 PITTSBURG, CA PACIFIC BELL
925-253 ORINDA, CA PACIFIC BELL
925-254 ORINDA, CA PACIFIC BELL
925-255 ORINDA, CA MCI WORLDCOM COMMUNICATIONS, INC., CA
925-256 Walnut Creek, CA PACIFIC BELL
925-257 ORINDA, CA MCIMETRO ACCESS TRANSMISSION SERVICES LLC
925-258 ORINDA, CA PACIFIC BELL
925-259 ORINDA, CA XO CALIFORNIA, INC.
925-260 Walnut Creek, CA SPRINT SPECTRUM L.P.
925-261 Pittsburg, CA PACIFIC BELL
925-262 Walnut Creek, CA GLOBAL CROSSING LOCAL SERVICES, INC.-CA
925-263 DANVILLE, CA GLOBAL CROSSING LOCAL SERVICES, INC.-CA
925-264 PLEASANTON, CA GLOBAL CROSSING LOCAL SERVICES, INC.-CA
925-265 CONCORD, CA GLOBAL CROSSING LOCAL SERVICES, INC.-CA
925-266 Walnut Creek, CA CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA
925-267 PITTSBURG, CA XO CALIFORNIA, INC.
925-268 MORAGA, CA XO CALIFORNIA, INC.
925-269 MARTINEZ, CA XO CALIFORNIA, INC.
925-270 CONCORD, CA BROADWING COMMUNICATIONS, LLC - CA
925-271 PLEASANTON, CA TELEPORT COMMUNICATIONS GROUP - SAN FRANCISCO
925-272 DANVILLE, CA LEVEL 3 COMMUNICATIONS, LLC - CA
925-273 LIVERMORE, CA XO CALIFORNIA, INC.
925-274 Walnut Creek, CA PACIFIC BELL
925-275 Bishop's Ranch, CA PACIFIC BELL
925-276 CLAYTON, CA XO CALIFORNIA, INC.
925-277 Bishop's Ranch, CA PACIFIC BELL
925-278 Walnut Creek, CA COMCAST PHONE OF CALIFORNIA, LLC - CA
925-279 Walnut Creek, CA PACIFIC BELL
925-280 Walnut Creek, CA PACIFIC BELL
925-281 ANTIOCH, CA ONVOY, LLC - CA
925-282 LAFAYETTE, CA MCIMETRO ACCESS TRANSMISSION SERVICES LLC
925-283 LAFAYETTE, CA PACIFIC BELL
925-284 LAFAYETTE, CA PACIFIC BELL
925-285 Walnut Creek, CA NEW CINGULAR WIRELESS PCS, LLC
925-286 Walnut Creek, CA NEW CINGULAR WIRELESS PCS, LLC
925-287 Walnut Creek, CA PACIFIC BELL
925-288 CONCORD, CA PACIFIC BELL
925-289 Walnut Creek, CA YMAX COMMUNICATIONS CORP. - CA
925-290 LIVERMORE, CA XO CALIFORNIA, INC.
925-291 Pittsburg, CA XO CALIFORNIA, INC.
925-292 LIVERMORE, CA COMCAST PHONE OF CALIFORNIA, LLC - CA
925-293 MARTINEZ, CA TNCI-OP-CO - CA
925-294 LIVERMORE, CA PACIFIC BELL
925-295 Walnut Creek, CA PACIFIC BELL
925-296 Walnut Creek, CA PACIFIC BELL
925-297 LAFAYETTE, CA XO CALIFORNIA, INC.
925-298 LAFAYETTE, CA MCI WORLDCOM COMMUNICATIONS, INC., CA
925-299 LAFAYETTE, CA PACIFIC BELL
925-300 Walnut Creek, CA O1 COMMUNICATIONS, INC. - 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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