The 925 Area Code (or Area Code 925) is located in the state of CA. Area Code 925 is one of the 269 3-digit telephone area codes in the USA. It covers roughly 1.26 million unique phone numbers and 3.92 million individuals near the city of Pleasanton
Area code 925 was put into service. Area code 925 was created from a split of area code 510.
Antioch, Brentwood, Clayton, Concord, Danville, Fremont, Hayward, Lafayette, Livermore, Martinez, Moraga, Oakland, Oakley, Orinda, Pittsburg, Pleasanton, San Ramon, Sunol, Walnut Creek.
| PREFIX | COUNTY | CITY | CARRIER | TYPE |
|---|---|---|---|---|
| 925-274 | Contra Costa | Walnut Creek | Pacific Bell | Wireless |
| 925-275 | Contra Costa | San Ramon | Pacific Bell | Landline |
| 925-276 | Contra Costa | Clayton | Xo California, Inc. | Landline |
| 925-277 | Contra Costa | San Ramon | Pacific Bell | Landline |
| 925-279 | Contra Costa | Walnut Creek | Pacific Bell | Wireless |
| 925-280 | Contra Costa | Walnut Creek | Pacific Bell | Wireless |
| 925-281 | Contra Costa | Antioch | Neutral Tandem-California, Llc - CA | Landline |
| 925-282 | Contra Costa | Lafayette | Mcimetro Access Transmission Services Llc | Landline |
| 925-283 | Contra Costa | Lafayette | Pacific Bell | Landline |
| 925-284 | Contra Costa | Lafayette | Pacific Bell | Landline |
| 925-285 | Contra Costa | Walnut Creek | New Cingular Wireless Pcs, Llc | Wireless |
| 925-286 | Contra Costa | Walnut Creek | New Cingular Wireless Pcs, Llc | Wireless |
| 925-287 | Contra Costa | Walnut Creek | Pacific Bell | Wireless |
| 925-288 | Contra Costa | Concord | Pacific Bell | Landline |
| 925-289 | Contra Costa | Walnut Creek | Ymax Communications Corp. - CA | Landline |
| 925-290 | Alameda | Livermore | Xo California, Inc. | Landline |
| 925-291 | Contra Costa | Pittsburg | Xo California, Inc. | Landline |
| 925-292 | Alameda | Livermore | Comcast Phone Of California, Llc - CA | Landline |
| 925-293 | Contra Costa | Martinez | Matrix Telecom, Llc. Sii Tnci - CA | Landline |
| 925-294 | Alameda | Livermore | Pacific Bell | Landline |
| 925-295 | Contra Costa | Walnut Creek | Pacific Bell | Wireless |
| 925-296 | Contra Costa | Walnut Creek | Pacific Bell | Wireless |
| 925-297 | Contra Costa | Lafayette | Xo California, Inc. | Landline |
| 925-298 | Contra Costa | Lafayette | Mci Worldcom Communications, Inc., CA | Landline |
| 925-299 | Contra Costa | Lafayette | Pacific Bell | Landline |
| 925-300 | Contra Costa | Walnut Creek | O1 Communications, Inc. - CA | Landline |
| 925-301 | Contra Costa | Antioch | O1 Communications, Inc. - CA | Landline |
| 925-302 | Contra Costa | San Ramon | Level 3 Telecom Of California, Lp - CA | Landline |
| 925-303 | Contra Costa | Antioch | Level 3 Telecom Of California, Lp - CA | Landline |
| 925-304 | Contra Costa | Walnut Creek | Level 3 Communications, Llc - CA | Landline |
| 925-305 | Contra Costa | Concord | Level 3 Telecom Of California, Lp - CA | Landline |
| 925-307 | Contra Costa | San Ramon | Level 3 Telecom Of California, Lp - CA | Landline |
| 925-308 | Contra Costa | Brentwood | Level 3 Telecom Of California, Lp - CA | Landline |
| 925-309 | Contra Costa | Walnut Creek | Level 3 Telecom Of California, Lp - CA | Landline |
| 925-310 | Contra Costa | Lafayette | Level 3 Telecom Of California, Lp - CA | Landline |
| 925-312 | Contra Costa | Antioch | Usa Mobility Wireless, Inc. | Wireless |
| 925-313 | Contra Costa | Martinez | Pacific Bell | Landline |
| 925-314 | Contra Costa | Danville | Pacific Bell | Landline |
| 925-315 | Alameda | Livermore | Level 3 Telecom Of California, Lp - CA | Landline |
| 925-316 | Contra Costa | Walnut Creek | Level 3 Communications, Llc - CA | Landline |
| 925-317 | Contra Costa | Walnut Creek | O1 Communications, Inc. - CA | Landline |
| 925-318 | Contra Costa | Walnut Creek | Level 3 Telecom Of California, Lp - CA | Landline |
| 925-319 | Alameda | Sunol | T-Mobile Usa, Inc. | Landline |
| 925-320 | Contra Costa | Moraga | U.s. Telepacific Corp. - CA | Landline |
| 925-321 | Alameda | Livermore | New Cingular Wireless Pcs, Llc | Wireless |
| 925-322 | Contra Costa | Walnut Creek | Bandwidth.com Clec, Llc - CA | Landline |
| 925-323 | Contra Costa | Walnut Creek | New Cingular Wireless Pcs, Llc | Wireless |
| 925-324 | Contra Costa | Walnut Creek | Cellco Partnership Dba Verizon Wireless - CA | Wireless |
| 925-325 | Contra Costa | Pittsburg | T-Mobile Usa, Inc. | Wireless |
| 925-326 | Contra Costa | Concord | Level 3 Communications, Llc - CA | Landline |
| 925-327 | Contra Costa | San Ramon | Pacific Bell | Landline |
| 925-328 | Contra Costa | San Ramon | Pacific Bell | Landline |
| 925-330 | Contra Costa | Walnut Creek | New Cingular Wireless Pcs, Llc | Wireless |
| 925-331 | Contra Costa | Antioch | U.s. Telepacific Corp. - CA | Landline |
| 925-332 | Contra Costa | Concord | Peerless Network Of California, Llc - CA | Landline |
| 925-333 | Contra Costa | Walnut Creek | American Messaging Services, Llc | Wireless |
| 925-334 | Contra Costa | Concord | Cellco Partnership Dba Verizon Wireless - CA | Wireless |
| 925-335 | Contra Costa | Martinez | Pacific Bell | Landline |
| 925-336 | Contra Costa | San Ramon | New Cingular Wireless Pcs, Llc | Wireless |
| 925-337 | Alameda | Livermore | Cellco Partnership Dba Verizon Wireless - CA | Wireless |
| 925-338 | Contra Costa | Concord | Bandwidth.com Clec, Llc - CA | Landline |
| 925-339 | Alameda | Livermore | Metro Pcs, Inc. | Wireless |
| 925-340 | Contra Costa | Walnut Creek | Usa Mobility Wireless, Inc. | Wireless |
| 925-341 | Contra Costa | Antioch | American Messaging Services, Llc | Wireless |
| 925-342 | Contra Costa | Antioch | American Messaging Services, Llc | Wireless |
| 925-343 | Alameda | Pleasanton | American Messaging Services, Llc | Wireless |
| 925-344 | Alameda | Livermore | Mpower Communications Corp - CA | Landline |
| 925-345 | Contra Costa | Danville | American Messaging Services, Llc | Wireless |
| 925-346 | Contra Costa | Concord | American Messaging Services, Llc | Wireless |
| 925-347 | Alameda | Livermore | American Messaging Services, Llc | Wireless |
| Phone Number 925-232-1423 |
USAGE Landline |
City Pittsburg |
Operate Read more about who called from 9252321423 |
Update Time Mar-26-2026 |
| Phone Number 925-678-5585 |
USAGE Landline |
City Danville |
Operate Read more about who called from 9256785585 |
Update Time Mar-26-2026 |
| Phone Number 925-307-5895 |
USAGE Landline |
City San Ramon |
Operate Read more about who called from 9253075895 |
Update Time Mar-26-2026 |
| Phone Number 925-482-7247 |
USAGE Landline |
City Walnut Creek |
Operate Read more about who called from 9254827247 |
Update Time Mar-26-2026 |
| Phone Number 925-361-2225 |
USAGE Landline |
City San Ramon |
Operate Read more about who called from 9253612225 |
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| Phone Number 925-891-7343 |
USAGE Landline |
City Oakland |
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| Phone Number 925-332-4738 |
USAGE Landline |
City Concord |
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Update Time Mar-26-2026 |
| Phone Number 925-318-6878 |
USAGE Landline |
City Walnut Creek |
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Update Time Mar-26-2026 |
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