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 |
|---|---|---|---|---|
| 925-348 | Contra Costa | Concord | New Cingular Wireless Pcs, Llc | Wireless |
| 925-349 | Contra Costa | Concord | Teleport Communications Group - San Francisco | Landline |
| 925-350 | Contra Costa | Antioch | Comcast Phone Of California, Llc - CA | Landline |
| 925-351 | Alameda | Pleasanton | Sprint Spectrum L.p. | Wireless |
| 925-352 | Alameda | Pleasanton | Sprint Spectrum L.p. | Wireless |
| 925-353 | Alameda | Fremont | New Cingular Wireless Pcs, Llc | Wireless |
| 925-354 | Contra Costa | Antioch | New Cingular Wireless Pcs, Llc | Wireless |
| 925-355 | Contra Costa | San Ramon | Pacific Bell | Landline |
| 925-356 | Contra Costa | Concord | Pacific Bell | Landline |
| 925-357 | Contra Costa | Walnut Creek | Level 3 Communications, Llc - CA | Landline |
| 925-358 | Contra Costa | San Ramon | Pacific Bell | Landline |
| 925-359 | Contra Costa | San Ramon | Mcimetro Access Transmission Services Llc | Landline |
| 925-360 | Contra Costa | Walnut Creek | New Cingular Wireless Pcs, Llc | Wireless |
| 925-361 | Contra Costa | San Ramon | Teleport Communications Group - San Francisco | Landline |
| 925-362 | Contra Costa | Danville | Pacific Bell | Landline |
| 925-363 | Contra Costa | Concord | Pacific Bell | Landline |
| 925-364 | Alameda | Hayward | Mci Worldcom Communications, Inc., CA | Landline |
| 925-365 | Contra Costa | San Ramon | Teleport Communications Group - San Francisco | Landline |
| 925-366 | Alameda | Pleasanton | Sprint Spectrum L.p. | Wireless |
| 925-367 | Alameda | Pleasanton | Sprint Spectrum L.p. | Wireless |
| 925-368 | Alameda | Pleasanton | Sprint Spectrum L.p. | Wireless |
| 925-369 | Contra Costa | Martinez | Matrix Telecom, Llc. Sii Tnci - CA | Landline |
| 925-370 | Contra Costa | Martinez | Pacific Bell | Landline |
| 925-371 | Alameda | Livermore | Pacific Bell | Landline |
| 925-372 | Contra Costa | Martinez | Pacific Bell | Landline |
| 925-373 | Alameda | Livermore | Pacific Bell | Landline |
| 925-374 | Contra Costa | Martinez | Allegiance Telecom, Inc. - CA | Landline |
| 925-376 | Contra Costa | Moraga | Pacific Bell | Landline |
| 925-377 | Contra Costa | Moraga | Pacific Bell | Landline |
| 925-380 | Contra Costa | San Ramon | Level 3 Communications, Llc - CA | Landline |
| 925-381 | Contra Costa | Concord | New Cingular Wireless Pcs, Llc | Wireless |
| 925-382 | Contra Costa | Antioch | Sprint Spectrum L.p. | Wireless |
| 925-383 | Contra Costa | Concord | Sprint Spectrum L.p. | Wireless |
| 925-385 | Alameda | Oakland | Teleport Communications Group - San Francisco | Landline |
| 925-386 | Alameda | Oakland | Teleport Communications Group - San Francisco | Landline |
| 925-387 | Contra Costa | Martinez | Teleport Communications Group - San Francisco | Landline |
| 925-388 | Alameda | Oakland | Teleport Communications Group - San Francisco | Landline |
| 925-389 | Contra Costa | Danville | New Cingular Wireless Pcs, Llc | Wireless |
| 925-392 | Contra Costa | Brentwood | Teleport Communications Group - San Francisco | Landline |
| 925-394 | Contra Costa | San Ramon | Global Crossing Local Services, Inc.-Ca | Landline |
| 925-395 | Contra Costa | Walnut Creek | At&t Local | Landline |
| 925-396 | Alameda | Pleasanton | Matrix Telecom, Llc. Sii Tnci - CA | Landline |
| 925-397 | Alameda | Pleasanton | Matrix Telecom, Llc. Sii Tnci - CA | Landline |
| 925-398 | Alameda | Pleasanton | Teleport Communications Group - San Francisco | Landline |
| 925-399 | Alameda | Pleasanton | Comcast Phone Of California, Llc - CA | Landline |
| 925-400 | Alameda | Pleasanton | O1 Communications, Inc. - CA | Landline |
| 925-401 | Alameda | Pleasanton | Allegiance Telecom, Inc. - CA | Landline |
| 925-402 | Contra Costa | Orinda | Allegiance Telecom, Inc. - CA | Landline |
| 925-403 | Contra Costa | Lafayette | Allegiance Telecom, Inc. - CA | Landline |
| 925-404 | Contra Costa | San Ramon | Allegiance Telecom, Inc. - CA | Landline |
| 925-405 | Contra Costa | Concord | Allegiance Telecom, Inc. - CA | Landline |
| 925-406 | Contra Costa | Danville | Allegiance Telecom, Inc. - CA | Landline |
| 925-407 | Contra Costa | Walnut Creek | Allegiance Telecom, Inc. - CA | Landline |
| 925-408 | Contra Costa | Concord | New Cingular Wireless Pcs, Llc | Wireless |
| 925-410 | Contra Costa | Martinez | American Messaging Services, Llc | Wireless |
| 925-413 | Contra Costa | San Ramon | New Cingular Wireless Pcs, Llc | Wireless |
| 925-415 | Contra Costa | San Ramon | Broadwing Communications, Llc - CA | Landline |
| 925-416 | Alameda | Pleasanton | Pacific Bell | Wireless |
| 925-417 | Alameda | Pleasanton | Pacific Bell | Landline |
| 925-418 | Contra Costa | Brentwood | Broadwing Communications, Llc - CA | Landline |
| 925-419 | Contra Costa | San Ramon | American Messaging Services, Llc | Wireless |
| 925-420 | Contra Costa | Brentwood | O1 Communications, Inc. - CA | Landline |
| 925-421 | Contra Costa | Concord | Bandwidth.com Clec, Llc - CA | Landline |
| 925-422 | Alameda | Livermore | Pacific Bell | Landline |
| 925-423 | Alameda | Livermore | Pacific Bell | Landline |
| 925-424 | Alameda | Livermore | Pacific Bell | Landline |
| 925-425 | Alameda | Pleasanton | Teleport Communications Group - San Francisco | Landline |
| 925-426 | Alameda | Pleasanton | Pacific Bell | Landline |
| 925-427 | Contra Costa | Pittsburg | Pacific Bell | Landline |
| 925-428 | Contra Costa | Antioch | T-Mobile Usa, Inc. | 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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Update Time Mar-26-2026 |
| 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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