California, United States
Pacific Time
12:54 AM
Area Code
650
State / Province
California
Country
United States
Time Zone
Pacific Time
Area code 650 covers 15 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:+16505550100">+16505550100</a><a href="tel:+16505550199">+16505550199</a>Look up which exchange in California a specific 650 number is homed to, and whether its block is wireline or wireless. See what a reverse lookup can establish before relying on the answer.
715 active prefixes in this area code, assigned as 5,802 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 5,802
| NPA-NXX | Block | Rate centre | Type | Carrier (OCN) | Switch | LATA | LIR | Dates |
|---|---|---|---|---|---|---|---|---|
| 650-200 | 0 | San Mateo | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - CA (981E) | SNFCCA21XUY | 722 | — | — |
| 650-200 | 1 | San Mateo | Landline or VoIP | IP HORIZON LLC (515J) | — | 722 | — | — |
| 650-200 | 2 | San Mateo | Landline or VoIP | TWILIO INTERNATIONAL, INC. (506J) | SNFCCAMKX5Y | 722 | — | — |
| 650-200 | 3 | San Mateo | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - CA (981E) | SNFCCA21XUY | 722 | — | — |
| 650-200 | 4 | San Mateo | Landline or VoIP | IP HORIZON LLC (515J) | — | 722 | — | — |
| 650-200 | 5 | San Mateo | Wireless | T-MOBILE USA, INC. (6529) | OKLECAZV1MD | 722 | — | — |
| 650-200 | 6 | San Mateo | Wireless | T-MOBILE USA, INC. (6529) | OKLECAZV1MD | 722 | — | — |
| 650-200 | 7 | San Mateo | Wireless | T-MOBILE USA, INC. (6529) | OKLECAZV1MD | 722 | — | — |
| 650-200 | 8 | San Mateo | Wireless | T-MOBILE USA, INC. (6529) | OKLECAZV1MD | 722 | — | — |
| 650-200 | 9 | San Mateo | Wireless | T-MOBILE USA, INC. (6529) | OKLECAZV1MD | 722 | — | — |
| 650-200 | A | San Mateo | Landline or VoIP | TWILIO INTERNATIONAL, INC. (506J) | SNFCCAMKX5Y | 722 | — | — |
| 650-201 | 0 | South San Francisco | Wireless | NEW CINGULAR WIRELESS PCS, LLC (6010) | SANTA CLARA | 722 | — | — |
| 650-201 | 1 | South San Francisco | Wireless | T-MOBILE USA, INC. (6529) | OKLECAZV1MD | 722 | — | — |
| 650-201 | 2 | South San Francisco | Wireless | T-MOBILE USA, INC. (6529) | OKLECAZV1MD | 722 | — | — |
| 650-201 | 3 | South San Francisco | Wireless | T-MOBILE USA, INC. (6529) | OKLECAZV1MD | 722 | — | — |
| 650-201 | 4 | South San Francisco | Wireless | T-MOBILE USA, INC. (6529) | OKLECAZV1MD | 722 | — | — |
| 650-201 | 5 | South San Francisco | Wireless | T-MOBILE USA, INC. (6529) | OKLECAZV1MD | 722 | — | — |
| 650-201 | 6 | South San Francisco | Wireless | T-MOBILE USA, INC. (6529) | OKLECAZV1MD | 722 | — | — |
| 650-201 | 7 | South San Francisco | Wireless | T-MOBILE USA, INC. (6529) | OKLECAZV1MD | 722 | — | — |
| 650-201 | 8 | South San Francisco | Wireless | T-MOBILE USA, INC. (6529) | OKLECAZV1MD | 722 | — | — |
| 650-201 | 9 | South San Francisco | Wireless | T-MOBILE USA, INC. (6529) | OKLECAZV1MD | 722 | — | — |
| 650-201 | A | South San Francisco | Wireless | T-MOBILE USA, INC. (6529) | OKLECAZV1MD | 722 | — | — |
| 650-202 | 0 | San Mateo | Landline or VoIP | UTILITY TELECOM GROUP, LLC - CA (9262) | SNFCCAMKX1X | 722 | — | — |
| 650-202 | 1 | San Mateo | Landline or VoIP | UTILITY TELECOM GROUP, LLC - CA (9262) | SNFCCAMKX1X | 722 | — | — |
| 650-202 | 2 | San Mateo | Landline or VoIP | UTILITY TELECOM GROUP, LLC - CA (9262) | SNFCCAMKX1X | 722 | — | — |
| 650-202 | 3 | San Mateo | Landline or VoIP | UTILITY TELECOM GROUP, LLC - CA (9262) | SNFCCAMKX1X | 722 | — | — |
| 650-202 | 4 | San Mateo | Landline or VoIP | UTILITY TELECOM GROUP, LLC - CA (9262) | SNFCCAMKX1X | 722 | — | — |
| 650-202 | 5 | San Mateo | Landline or VoIP | UTILITY TELECOM GROUP, LLC - CA (9262) | SNFCCAMKX1X | 722 | — | — |
| 650-202 | 6 | San Mateo | Landline or VoIP | UTILITY TELECOM GROUP, LLC - CA (9262) | SNFCCAMKX1X | 722 | — | — |
| 650-202 | 7 | San Mateo | Landline or VoIP | UTILITY TELECOM GROUP, LLC - CA (9262) | SNFCCAMKX1X | 722 | — | — |
| 650-202 | 8 | San Mateo | Landline or VoIP | UTILITY TELECOM GROUP, LLC - CA (9262) | SNFCCAMKX1X | 722 | — | — |
| 650-202 | 9 | San Mateo | Landline or VoIP | UTILITY TELECOM GROUP, LLC - CA (9262) | SNFCCAMKX1X | 722 | — | — |
| 650-202 | A | San Mateo | Landline or VoIP | UTILITY TELECOM GROUP, LLC - CA (9262) | SNFCCAMKX1X | 722 | — | — |
| 650-203 | 0 | Mountain View | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - CA (981E) | SNFCCA21XUY | 722 | — | — |
| 650-203 | 1 | Mountain View | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - CA (981E) | SNFCCA21XUY | 722 | — | — |
| 650-203 | 2 | Mountain View | Landline or VoIP | ONVOY, LLC - CA (649C) | SAN FRANCISCO | 722 | — | — |
| 650-203 | 3 | Mountain View | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA (6006) | HYWRCAMCDMD | 722 | — | — |
| 650-203 | 4 | Mountain View | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA (6006) | HYWRCAMCDMD | 722 | — | — |
| 650-203 | 5 | Mountain View | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - CA (981E) | SNFCCA21XUY | 722 | — | — |
| 650-203 | 6 | Mountain View | Landline or VoIP | ONVOY, LLC - CA (649C) | SAN FRANCISCO | 722 | — | — |
| 650-203 | 7 | Mountain View | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - CA (981E) | SNFCCA21XUY | 722 | — | — |
| 650-203 | 8 | Mountain View | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - CA (981E) | SNFCCA21XUY | 722 | — | — |
| 650-203 | 9 | Mountain View | Landline or VoIP | ONVOY, LLC - CA (649C) | SAN FRANCISCO | 722 | — | — |
| 650-203 | A | Mountain View | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - CA (981E) | SNFCCA21XUY | 722 | — | — |
| 650-204 | 0 | Millbrae | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - CA (981E) | SNFCCA21XUY | 722 | — | — |
| 650-204 | 1 | Millbrae | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - CA (981E) | SNFCCA21XUY | 722 | — | — |
| 650-204 | 2 | Millbrae | Landline or VoIP | LEVEL 3 TELECOM OF CALIFORNIA, LP - CA (7718) | EMVLCA04AMD | 722 | — | — |
| 650-204 | 3 | Millbrae | Landline or VoIP | LEVEL 3 COMMUNICATIONS, LLC - CA (8826) | SNFCCASY5MD | 722 | — | — |
| 650-204 | 4 | Millbrae | Landline or VoIP | LEVEL 3 COMMUNICATIONS, LLC - CA (8826) | SNFCCASY5MD | 722 | — | — |
| 650-204 | 5 | Millbrae | Landline or VoIP | ONVOY, LLC - CA (649C) | SAN FRANCISCO | 722 | — | — |
| 650-204 | 6 | Millbrae | Landline or VoIP | MCIMETRO ACCESS TRANSMISSION SERVICES LLC (7229) | HYWRCA115MD | 722 | — | — |
| 650-204 | 7 | Millbrae | Landline or VoIP | MCIMETRO ACCESS TRANSMISSION SERVICES LLC (7229) | HYWRCA115MD | 722 | — | — |
| 650-204 | 8 | Millbrae | Landline or VoIP | LEVEL 3 COMMUNICATIONS, LLC - CA (8826) | SNFCCASY5MD | 722 | — | — |
| 650-204 | 9 | Millbrae | Landline or VoIP | LEVEL 3 COMMUNICATIONS, LLC - CA (8826) | SNFCCASY5MD | 722 | — | — |
| 650-204 | A | Millbrae | Landline or VoIP | LEVEL 3 TELECOM OF CALIFORNIA, LP - CA (7718) | EMVLCA04AMD | 722 | — | — |
| 650-205 | A | South San Francisco | Landline or VoIP | SPOK, INC. (6630) | SNFCCA21XEZ | 722 | — | — |
| 650-206 | 0 | Woodside | Wireless | NEW CINGULAR WIRELESS PCS, LLC (6010) | SANTA CLARA | 722 | — | — |
| 650-206 | 1 | Woodside | Landline or VoIP | ONVOY, LLC - CA (649C) | SAN FRANCISCO | 722 | — | — |
| 650-206 | 2 | Woodside | Landline or VoIP | LEVEL 3 COMMUNICATIONS, LLC - CA (8826) | SNFCCASY5MD | 722 | — | — |
| 650-206 | 3 | Woodside | Wireless | NEW CINGULAR WIRELESS PCS, LLC (6010) | SANTA CLARA | 722 | — | — |
| 650-206 | 4 | Woodside | Landline or VoIP | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA (7240) | HAYWARD | 722 | — | — |
| 650-206 | 5 | Woodside | Landline or VoIP | LEVEL 3 COMMUNICATIONS, LLC - CA (8826) | SNFCCASY5MD | 722 | — | — |
| 650-206 | 6 | Woodside | Landline or VoIP | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS (671J) | SNJSCAYB0MD | 722 | — | — |
| 650-206 | 7 | Woodside | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - CA (981E) | SNFCCA21XUY | 722 | — | — |
| 650-206 | 8 | Woodside | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - CA (981E) | SNFCCA21XUY | 722 | — | — |
| 650-206 | 9 | Woodside | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - CA (981E) | SNFCCA21XUY | 722 | — | — |
| 650-206 | A | Woodside | Landline or VoIP | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS (671J) | SNJSCAYB0MD | 722 | — | — |
| 650-207 | A | Redwood City | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA (6006) | HYWRCAMCDMD | 722 | — | — |
| 650-208 | A | Redwood City | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA (6006) | HYWRCAMCDMD | 722 | — | — |
| 650-209 | 0 | Los Altos | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - CA (981E) | SNFCCA21XUY | 722 | — | — |
| 650-209 | 1 | Los Altos | Landline or VoIP | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS (671J) | SNJSCAYB0MD | 722 | — | — |
| 650-209 | 2 | Los Altos | Wireless | T-MOBILE USA, INC. (6529) | OKLECAZV1MD | 722 | — | — |
| 650-209 | 3 | Los Altos | Landline or VoIP | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS (671J) | SNJSCAYB0MD | 722 | — | — |
| 650-209 | 4 | Los Altos | Landline or VoIP | LEVEL 3 COMMUNICATIONS, LLC - CA (8826) | SNFCCASY5MD | 722 | — | — |
| 650-209 | 5 | Los Altos | Landline or VoIP | COMCAST PHONE OF CALIFORNIA, LLC (394L) | OKLDCA03XOY | 722 | — | — |
| 650-209 | 6 | Los Altos | Landline or VoIP | LEVEL 3 COMMUNICATIONS, LLC - CA (8826) | SNFCCASY5MD | 722 | — | — |
| 650-209 | 7 | Los Altos | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - CA (981E) | SNFCCA21XUY | 722 | — | — |
| 650-209 | 8 | Los Altos | Landline or VoIP | LEVEL 3 COMMUNICATIONS, LLC - CA (8826) | SNFCCASY5MD | 722 | — | — |
| 650-209 | 9 | Los Altos | Landline or VoIP | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS (671J) | SNJSCAYB0MD | 722 | — | — |
| 650-209 | A | Los Altos | Landline or VoIP | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS (671J) | SNJSCAYB0MD | 722 | — | — |
| 650-210 | 0 | Mountain View | Landline | PACIFIC BELL (9740) | MOUNTAIN VIEW | 722 | — | — |
| 650-210 | 1 | Mountain View | Landline | PACIFIC BELL (9740) | MOUNTAIN VIEW | 722 | — | — |
| 650-210 | 2 | Mountain View | Landline | PACIFIC BELL (9740) | MOUNTAIN VIEW | 722 | — | — |
| 650-210 | 3 | Mountain View | Landline | PACIFIC BELL (9740) | MOUNTAIN VIEW | 722 | — | — |
| 650-210 | 4 | Mountain View | Landline or VoIP | MCIMETRO ACCESS TRANSMISSION SERVICES LLC (7229) | HYWRCA115MD | 722 | — | — |
| 650-210 | 5 | Mountain View | Landline | PACIFIC BELL (9740) | MOUNTAIN VIEW | 722 | — | — |
| 650-210 | 6 | Mountain View | Wireless | T-MOBILE USA, INC. (6529) | OKLECAZV1MD | 722 | — | — |
| 650-210 | 7 | Mountain View | Landline or VoIP | ONVOY, LLC - CA (649C) | SAN FRANCISCO | 722 | — | — |
| 650-210 | 8 | Mountain View | Landline | PACIFIC BELL (9740) | MOUNTAIN VIEW | 722 | — | — |
| 650-210 | 9 | Mountain View | Landline | PACIFIC BELL (9740) | MOUNTAIN VIEW | 722 | — | — |
| 650-210 | A | Mountain View | Landline | PACIFIC BELL (9740) | MOUNTAIN VIEW | 722 | — | — |
| 650-212 | 0 | San Mateo | Landline | PACIFIC BELL (9740) | SAN MATEO | 722 | — | — |
| 650-212 | 1 | San Mateo | Landline | PACIFIC BELL (9740) | SAN MATEO | 722 | — | — |
| 650-212 | 2 | San Mateo | Landline | PACIFIC BELL (9740) | SAN MATEO | 722 | — | — |
| 650-212 | 3 | San Mateo | Landline | PACIFIC BELL (9740) | SAN MATEO | 722 | — | — |
| 650-212 | 4 | San Mateo | Landline | PACIFIC BELL (9740) | SAN MATEO | 722 | — | — |
| 650-212 | 5 | San Mateo | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - CA (981E) | SNFCCA21XUY | 722 | — | — |
| 650-212 | 6 | San Mateo | Landline or VoIP | ONVOY, LLC - CA (649C) | SAN FRANCISCO | 722 | — | — |
| 650-212 | 7 | San Mateo | Landline | PACIFIC BELL (9740) | SAN MATEO | 722 | — | — |
| 650-212 | 8 | San Mateo | Landline | PACIFIC BELL (9740) | SAN MATEO | 722 | — | — |
Block-level assignments from the North American Numbering Plan administrator, via localcallingguide.com.
Assigned Prefixes
715
Assignment Blocks
5,802
Rate Centers
16
Carriers of Record
41
| Type | Blocks | Share |
|---|---|---|
| Landline | 1,205 | 21% |
| Landline or VoIP | 3,140 | 54% |
| Wireless | 1,457 | 25% |
| Carrier | Blocks |
|---|---|
| PACIFIC BELL | 1,205 |
| ONVOY, LLC - CA | 844 |
| T-MOBILE USA, INC. | 552 |
| NEW CINGULAR WIRELESS PCS, LLC | 477 |
| BANDWIDTH.COM CLEC, LLC - CA | 439 |
| LEVEL 3 COMMUNICATIONS, LLC - CA | 381 |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 352 |
| MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 260 |
| METROPCS, INC. | 188 |
| TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 137 |
| 31 other carriers | 967 |
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 |
|---|---|---|
| Palo Alto | 145 | 1,150 |
| San Mateo | 126 | 915 |
| Mountain View | 92 | 836 |
| South San Francisco | 89 | 657 |
| Redwood City | 65 | 478 |
| San Carlos-Belmont | 44 | 351 |
| Los Altos | 28 | 253 |
| Millbrae | 24 | 230 |
| San Francisco: Juniper DA | 22 | 154 |
| Half Moon Bay | 21 | 202 |
| Pacifica | 17 | 157 |
| Woodside | 14 | 142 |
| Pescadero | 11 | 111 |
| La Honda | 9 | 92 |
| Moss Beach | 7 | 73 |
| San Francisco: Central DA | 1 | 1 |
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 650 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. 650 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 650 covers 15 cities and communities in California, including Half Moon Bay, La Honda, Los Altos, Millbrae, Moss Beach, and 10 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 650 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 650 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 + 650 + 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 1 650 XXX XXXX. The country code for both the United States and Canada in NANP is +1.
Format 650 numbers using E.164 notation as required by RFC 3966: prefix with +1 and omit dashes and parentheses (e.g., +16505550100). This format ensures tel: links work correctly on all mobile browsers and VoIP apps. See the tel: URI formatting guide for complete examples.