California, United States
Pacific Time
5:28 PM
Area Code
925
State / Province
California
Country
United States
Time Zone
Pacific Time
Area code 925 covers 17 cities and communities across California, based on telephone company rate center data.
Use the E.164 format for clickable phone links (RFC 3966):
<a href="tel:+19255550100">+19255550100</a><a href="tel:+19255550199">+19255550199</a>Look up which exchange in California a specific 925 number is homed to, and whether its block is wireline or wireless. See what a reverse lookup can establish before relying on the answer.
639 active prefixes in this area code, assigned as 4,983 thousands-blocks — pooling splits one prefix across several carriers, so each block is listed separately with the rate centre it is homed to, its carrier of record, and the switch that serves it.
Showing blocks 1–100 of 4,983
| NPA-NXX | Block | Rate centre | Type | Carrier (OCN) | Switch | LATA | LIR | Dates |
|---|---|---|---|---|---|---|---|---|
| 925-200 | A | Pleasanton | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA (6006) | HYWRCAMCDMD | 722 | — | — |
| 925-201 | 0 | Pleasanton | Landline or VoIP | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS (671J) | SNJSCAYB0MD | 722 | — | — |
| 925-201 | 1 | Pleasanton | Landline or VoIP | COMCAST PHONE OF CALIFORNIA, LLC (394L) | OKLDCA03XOY | 722 | — | — |
| 925-201 | 2 | Pleasanton | Landline or VoIP | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS (671J) | SNJSCAYB0MD | 722 | — | — |
| 925-201 | 3 | Pleasanton | Landline or VoIP | COMCAST PHONE OF CALIFORNIA, LLC (394L) | OKLDCA03XOY | 722 | — | — |
| 925-201 | 4 | Pleasanton | Landline or VoIP | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS (671J) | SNJSCAYB0MD | 722 | — | — |
| 925-201 | 5 | Pleasanton | Landline or VoIP | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA (7240) | HAYWARD | 722 | — | — |
| 925-201 | 6 | Pleasanton | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - CA (981E) | SNFCCA21XUY | 722 | — | — |
| 925-201 | 7 | Pleasanton | Landline or VoIP | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS (671J) | SNJSCAYB0MD | 722 | — | — |
| 925-201 | 8 | Pleasanton | Landline or VoIP | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS (671J) | SNJSCAYB0MD | 722 | — | — |
| 925-201 | 9 | Pleasanton | Wireless | NEW CINGULAR WIRELESS PCS, LLC (6010) | CONCORD | 722 | — | — |
| 925-201 | A | Pleasanton | Landline or VoIP | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS (671J) | SNJSCAYB0MD | 722 | — | — |
| 925-202 | 0 | Pleasanton | Landline or VoIP | PEERLESS NETWORK OF CALIFORNIA, LLC - CA (373F) | SAN JOSE | 722 | — | — |
| 925-202 | 1 | Pleasanton | Wireless | T-MOBILE USA, INC. (6529) | OKLECAZV1MD | 722 | — | — |
| 925-202 | 2 | Pleasanton | Landline or VoIP | LEVEL 3 COMMUNICATIONS, LLC - CA (8826) | SNFCCASY5MD | 722 | — | — |
| 925-202 | 3 | Pleasanton | Wireless | T-MOBILE USA, INC. (6529) | OKLECAZV1MD | 722 | — | — |
| 925-202 | 4 | Pleasanton | Wireless | T-MOBILE USA, INC. (6529) | OKLECAZV1MD | 722 | — | — |
| 925-202 | 5 | Pleasanton | Wireless | T-MOBILE USA, INC. (6529) | OKLECAZV1MD | 722 | — | — |
| 925-202 | 6 | Pleasanton | Wireless | T-MOBILE USA, INC. (6529) | OKLECAZV1MD | 722 | — | — |
| 925-202 | 7 | Pleasanton | Wireless | T-MOBILE USA, INC. (6529) | OKLECAZV1MD | 722 | — | — |
| 925-202 | 8 | Pleasanton | Wireless | T-MOBILE USA, INC. (6529) | OKLECAZV1MD | 722 | — | — |
| 925-202 | 9 | Pleasanton | Wireless | T-MOBILE USA, INC. (6529) | OKLECAZV1MD | 722 | — | — |
| 925-202 | A | Pleasanton | Wireless | T-MOBILE USA, INC. (6529) | OKLECAZV1MD | 722 | — | — |
| 925-203 | 0 | Pittsburg | Wireless | NEW CINGULAR WIRELESS PCS, LLC (6010) | CONCORD | 722 | — | — |
| 925-203 | 1 | Pittsburg | Landline or VoIP | LEVEL 3 COMMUNICATIONS, LLC - CA (8826) | SNFCCASY5MD | 722 | — | — |
| 925-203 | 3 | Pittsburg | Landline or VoIP | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA (7240) | HAYWARD | 722 | — | — |
| 925-203 | 4 | Pittsburg | Landline or VoIP | MCIMETRO ACCESS TRANSMISSION SERVICES LLC (7229) | HYWRCA115MD | 722 | — | — |
| 925-203 | 5 | Pittsburg | Landline or VoIP | MCIMETRO ACCESS TRANSMISSION SERVICES LLC (7229) | HYWRCA115MD | 722 | — | — |
| 925-203 | 6 | Pittsburg | Landline or VoIP | ONVOY, LLC - CA (649C) | SAN FRANCISCO | 722 | — | — |
| 925-203 | 7 | Pittsburg | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA (6006) | HYWRCAMCDMD | 722 | — | — |
| 925-203 | 8 | Pittsburg | Wireless | NEW CINGULAR WIRELESS PCS, LLC (6010) | CONCORD | 722 | — | — |
| 925-203 | 9 | Pittsburg | Landline or VoIP | LEVEL 3 COMMUNICATIONS, LLC - CA (8826) | SNFCCASY5MD | 722 | — | — |
| 925-203 | A | Pittsburg | Wireless | NEW CINGULAR WIRELESS PCS, LLC (6010) | CONCORD | 722 | — | — |
| 925-204 | 0 | Antioch | Wireless | NEW CINGULAR WIRELESS PCS, LLC (6010) | CONCORD | 722 | — | — |
| 925-204 | 1 | Antioch | Wireless | NEW CINGULAR WIRELESS PCS, LLC (6010) | CONCORD | 722 | — | — |
| 925-204 | 2 | Antioch | Landline or VoIP | ONVOY, LLC - CA (649C) | SAN FRANCISCO | 722 | — | — |
| 925-204 | 3 | Antioch | Landline or VoIP | ONVOY, LLC - CA (649C) | SAN FRANCISCO | 722 | — | — |
| 925-204 | 4 | Antioch | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA (6006) | HYWRCAMCDMD | 722 | — | — |
| 925-204 | 5 | Antioch | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA (6006) | HYWRCAMCDMD | 722 | — | — |
| 925-204 | 6 | Antioch | Landline or VoIP | ONVOY, LLC - CA (649C) | SAN FRANCISCO | 722 | — | — |
| 925-204 | 7 | Antioch | Wireless | T-MOBILE USA, INC. (6529) | OKLECAZV1MD | 722 | — | — |
| 925-204 | 8 | Antioch | Wireless | T-MOBILE USA, INC. (6529) | OKLECAZV1MD | 722 | — | — |
| 925-204 | 9 | Antioch | Wireless | T-MOBILE USA, INC. (6529) | OKLECAZV1MD | 722 | — | — |
| 925-204 | A | Antioch | Wireless | T-MOBILE USA, INC. (6529) | OKLECAZV1MD | 722 | — | — |
| 925-205 | 0 | Danville | Wireless | ONVOY SPECTRUM, LLC (624H) | OKLDCA03XKY | 722 | — | — |
| 925-205 | 1 | Danville | Landline or VoIP | COMMIO, LLC (939H) | SNJUCACL4MD | 722 | — | — |
| 925-205 | 2 | Danville | Landline or VoIP | COMMIO, LLC (939H) | SNJUCACL4MD | 722 | — | — |
| 925-205 | 3 | Danville | Landline or VoIP | COMMIO, LLC (939H) | SNJUCACL4MD | 722 | — | — |
| 925-205 | 4 | Danville | Landline or VoIP | COMMIO, LLC (939H) | SNJUCACL4MD | 722 | — | — |
| 925-205 | 5 | Danville | Landline or VoIP | COMMIO, LLC (939H) | SNJUCACL4MD | 722 | — | — |
| 925-205 | 6 | Danville | Landline or VoIP | ONVOY, LLC - CA (649C) | SAN FRANCISCO | 722 | — | — |
| 925-205 | 7 | Danville | Wireless | ONVOY SPECTRUM, LLC (624H) | OKLDCA03XKY | 722 | — | — |
| 925-205 | 8 | Danville | Wireless | T-MOBILE USA, INC. (6529) | OKLECAZV1MD | 722 | — | — |
| 925-205 | 9 | Danville | Wireless | T-MOBILE USA, INC. (6529) | OKLECAZV1MD | 722 | — | — |
| 925-205 | A | Danville | Wireless | T-MOBILE USA, INC. (6529) | OKLECAZV1MD | 722 | — | — |
| 925-206 | 0 | Antioch | Wireless | T-MOBILE USA, INC. (6529) | OKLECAZV1MD | 722 | — | — |
| 925-206 | 1 | Antioch | Landline or VoIP | METROPCS, INC. (5562) | OKLECAZV1MD | 722 | — | — |
| 925-206 | 2 | Antioch | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA (6006) | HYWRCAMCDMD | 722 | — | — |
| 925-206 | 3 | Antioch | Landline or VoIP | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA (7240) | HAYWARD | 722 | — | — |
| 925-206 | 4 | Antioch | Landline or VoIP | COMCAST PHONE OF CALIFORNIA, LLC (394L) | OKLDCA03XOY | 722 | — | — |
| 925-206 | 5 | Antioch | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA (6006) | HYWRCAMCDMD | 722 | — | — |
| 925-206 | 6 | Antioch | Landline or VoIP | METROPCS, INC. (5562) | OKLECAZV1MD | 722 | — | — |
| 925-206 | 7 | Antioch | Landline or VoIP | METROPCS, INC. (5562) | OKLECAZV1MD | 722 | — | — |
| 925-206 | 8 | Antioch | Landline or VoIP | METROPCS, INC. (5562) | OKLECAZV1MD | 722 | — | — |
| 925-206 | 9 | Antioch | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA (6006) | HYWRCAMCDMD | 722 | — | — |
| 925-206 | A | Antioch | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA (6006) | HYWRCAMCDMD | 722 | — | — |
| 925-207 | 0 | Concord | Landline or VoIP | METROPCS, INC. (5562) | OKLECAZV1MD | 722 | — | — |
| 925-207 | 1 | Concord | Landline or VoIP | METROPCS, INC. (5562) | OKLECAZV1MD | 722 | — | — |
| 925-207 | 2 | Concord | Landline or VoIP | METROPCS, INC. (5562) | OKLECAZV1MD | 722 | — | — |
| 925-207 | 3 | Concord | Landline or VoIP | METROPCS, INC. (5562) | OKLECAZV1MD | 722 | — | — |
| 925-207 | 4 | Concord | Landline or VoIP | METROPCS, INC. (5562) | OKLECAZV1MD | 722 | — | — |
| 925-207 | 5 | Concord | Landline or VoIP | METROPCS, INC. (5562) | OKLECAZV1MD | 722 | — | — |
| 925-207 | 6 | Concord | Landline or VoIP | METROPCS, INC. (5562) | OKLECAZV1MD | 722 | — | — |
| 925-207 | 7 | Concord | Landline or VoIP | METROPCS, INC. (5562) | OKLECAZV1MD | 722 | — | — |
| 925-207 | 8 | Concord | Landline or VoIP | METROPCS, INC. (5562) | OKLECAZV1MD | 722 | — | — |
| 925-207 | 9 | Concord | Landline or VoIP | METROPCS, INC. (5562) | OKLECAZV1MD | 722 | — | — |
| 925-207 | A | Concord | Landline or VoIP | METROPCS, INC. (5562) | OKLECAZV1MD | 722 | — | — |
| 925-208 | 0 | Danville | Landline or VoIP | PEERLESS NETWORK OF CALIFORNIA, LLC - CA (373F) | SAN JOSE | 722 | — | — |
| 925-208 | 1 | Danville | Landline or VoIP | COMCAST PHONE OF CALIFORNIA, LLC (394L) | OKLDCA03XOY | 722 | — | — |
| 925-208 | 2 | Danville | Landline or VoIP | TELEPORT COMMUNICATIONS AMERICA, LLC - CA (7145) | SNRSCA01KMD | 722 | — | — |
| 925-208 | 3 | Danville | Landline or VoIP | TELEPORT COMMUNICATIONS AMERICA, LLC - CA (7145) | SNRSCA01KMD | 722 | — | — |
| 925-208 | 4 | Danville | Landline or VoIP | LEVEL 3 COMMUNICATIONS, LLC - CA (8826) | SNFCCASY5MD | 722 | — | — |
| 925-208 | 5 | Danville | Wireless | NEW CINGULAR WIRELESS PCS, LLC (6010) | CONCORD | 722 | — | — |
| 925-208 | 6 | Danville | Landline or VoIP | PEERLESS NETWORK OF CALIFORNIA, LLC - CA (373F) | SAN JOSE | 722 | — | — |
| 925-208 | 7 | Danville | Wireless | NEW CINGULAR WIRELESS PCS, LLC (6010) | CONCORD | 722 | — | — |
| 925-208 | 8 | Danville | Landline or VoIP | ONVOY, LLC - CA (649C) | SAN FRANCISCO | 722 | — | — |
| 925-208 | 9 | Danville | Wireless | NEW CINGULAR WIRELESS PCS, LLC (6010) | CONCORD | 722 | — | — |
| 925-208 | A | Danville | Landline or VoIP | TELEPORT COMMUNICATIONS AMERICA, LLC - CA (7145) | SNRSCA01KMD | 722 | — | — |
| 925-209 | 0 | Pleasanton | Wireless | T-MOBILE USA, INC. (6529) | OKLECAZV1MD | 722 | — | — |
| 925-209 | 1 | Pleasanton | Wireless | T-MOBILE USA, INC. (6529) | OKLECAZV1MD | 722 | — | — |
| 925-209 | 2 | Pleasanton | Landline or VoIP | TELNYX LLC (073H) | SNJUCACL3MD | 722 | — | — |
| 925-209 | 3 | Pleasanton | Wireless | T-MOBILE USA, INC. (6529) | OKLECAZV1MD | 722 | — | — |
| 925-209 | 4 | Pleasanton | Wireless | T-MOBILE USA, INC. (6529) | OKLECAZV1MD | 722 | — | — |
| 925-209 | 5 | Pleasanton | Wireless | T-MOBILE USA, INC. (6529) | OKLECAZV1MD | 722 | — | — |
| 925-209 | 6 | Pleasanton | Wireless | T-MOBILE USA, INC. (6529) | OKLECAZV1MD | 722 | — | — |
| 925-209 | 7 | Pleasanton | Wireless | T-MOBILE USA, INC. (6529) | OKLECAZV1MD | 722 | — | — |
| 925-209 | 8 | Pleasanton | Wireless | T-MOBILE USA, INC. (6529) | OKLECAZV1MD | 722 | — | — |
| 925-209 | 9 | Pleasanton | Wireless | T-MOBILE USA, INC. (6529) | OKLECAZV1MD | 722 | — | — |
| 925-209 | A | Pleasanton | Wireless | T-MOBILE USA, INC. (6529) | OKLECAZV1MD | 722 | — | — |
| 925-210 | A | Walnut Creek | Landline | PACIFIC BELL (9740) | WALNUT CREEK | 722 | — | — |
Block-level assignments from the North American Numbering Plan administrator, via localcallingguide.com.
Assigned Prefixes
639
Assignment Blocks
4,983
Rate Centers
17
Carriers of Record
41
| Type | Blocks | Share |
|---|---|---|
| Landline | 757 | 15% |
| Landline or VoIP | 2,782 | 56% |
| Wireless | 1,444 | 29% |
| Carrier | Blocks |
|---|---|
| PACIFIC BELL | 757 |
| ONVOY, LLC - CA | 620 |
| T-MOBILE USA, INC. | 508 |
| NEW CINGULAR WIRELESS PCS, LLC | 445 |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 394 |
| METROPCS, INC. | 294 |
| LEVEL 3 COMMUNICATIONS, LLC - CA | 272 |
| BANDWIDTH.COM CLEC, LLC - CA | 264 |
| MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 237 |
| U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 162 |
| 31 other carriers | 1,030 |
Carrier of record for each block. Numbers ported to another carrier keep their original block assignment, so this is not a lookup of who serves a given number today.
| Rate Center | Prefixes | Blocks |
|---|---|---|
| Walnut Creek | 103 | 640 |
| Concord | 89 | 696 |
| Pleasanton | 76 | 575 |
| Antioch | 67 | 541 |
| Livermore | 50 | 391 |
| Bishop Ranch | 43 | 309 |
| Dublin-San Ramon | 42 | 330 |
| Danville | 38 | 317 |
| East Contra Costa | 22 | 211 |
| Martinez | 22 | 187 |
| Pittsburg | 19 | 143 |
| Lafayette | 15 | 123 |
| Clayton | 12 | 120 |
| Orinda | 12 | 108 |
| Moraga | 11 | 103 |
| Pittsburg West | 9 | 99 |
| Sunol | 9 | 90 |
A rate center is the telephone exchange area a number is homed to. It sets local calling boundaries, and is not the caller's current location.
Area code 925 is a North American Numbering Plan (NANP) telephone area code assigned to California, United States. It is one of 41 area codes serving California. As population and demand for phone numbers grew, the region was divided into multiple numbering plan areas to avoid exhausting the available 7-digit number pool.
Yes. 925 is an active North American Numbering Plan (NANP) area code, currently assigned to California, United States. It is safe to answer or dial calls using this area code.
Area code 925 covers 17 cities and communities in California, including Antioch, Bishop Ranch, Clayton, Concord, Danville, and 12 more localities. This is based on telephone company rate center data — the geographic areas carriers use to determine local calling boundaries and to assign numbers when a business or individual requests a phone number in a specific city.
All numbers in the 925 area code observe Pacific Time (IANA timezone: America/Los_Angeles). Pacific Time is UTC−8 in winter (PST) and UTC−7 in summer (PDT). When placing a call to a 925 number from a different time zone, check the current local time above to avoid calling outside of business hours.
From within California, dial the 7-digit local number directly if calling within the same rate center, or dial 1 + 925 + 7-digit number for long-distance calls within North America. From outside the US or Canada, dial your country's international exit code followed by 1 925 XXX XXXX. The country code for both the United States and Canada in NANP is +1.
Format 925 numbers using E.164 notation as required by RFC 3966: prefix with +1 and omit dashes and parentheses (e.g., +19255550100). This format ensures tel: links work correctly on all mobile browsers and VoIP apps. See the tel: URI formatting guide for complete examples.