California, United States
Pacific Time
12:12 AM
Area Code
628
State / Province
California
Country
United States
Time Zone
Pacific Time
Area code 628 covers 12 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:+16285550100">+16285550100</a><a href="tel:+16285550199">+16285550199</a>Look up which exchange in California a specific 628 number is homed to, and whether its block is wireline or wireless. See what a reverse lookup can establish before relying on the answer.
193 active prefixes in this area code, assigned as 2,055 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 2,055
| NPA-NXX | Block | Rate centre | Type | Carrier (OCN) | Switch | LATA | LIR | Dates |
|---|---|---|---|---|---|---|---|---|
| 628-200 | 0 | San Francisco: Juniper DA | Landline or VoIP | ONVOY, LLC - CA (649C) | SAN FRANCISCO | 722 | — | — |
| 628-200 | 1 | San Francisco: Juniper DA | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA (6006) | HYWRCAMCDMD | 722 | — | — |
| 628-200 | 2 | San Francisco: Juniper DA | Landline or VoIP | ONVOY, LLC - CA (649C) | SAN FRANCISCO | 722 | — | — |
| 628-200 | 3 | San Francisco: Juniper DA | Landline or VoIP | ONVOY, LLC - CA (649C) | SAN FRANCISCO | 722 | — | — |
| 628-200 | 4 | San Francisco: Juniper DA | Landline or VoIP | ONVOY, LLC - CA (649C) | SAN FRANCISCO | 722 | — | — |
| 628-200 | 5 | San Francisco: Juniper DA | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA (6006) | HYWRCAMCDMD | 722 | — | — |
| 628-200 | 6 | San Francisco: Juniper DA | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA (6006) | HYWRCAMCDMD | 722 | — | — |
| 628-200 | 7 | San Francisco: Juniper DA | Landline or VoIP | ONVOY, LLC - CA (649C) | SAN FRANCISCO | 722 | — | — |
| 628-200 | 8 | San Francisco: Juniper DA | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA (6006) | HYWRCAMCDMD | 722 | — | — |
| 628-200 | 9 | San Francisco: Juniper DA | Landline or VoIP | IP HORIZON LLC (515J) | — | 722 | — | — |
| 628-200 | A | San Francisco: Juniper DA | Landline or VoIP | ONVOY, LLC - CA (649C) | SAN FRANCISCO | 722 | — | — |
| 628-201 | 0 | San Francisco: Central DA | Landline or VoIP | PEERLESS NETWORK OF CALIFORNIA, LLC - CA (373F) | SAN JOSE | 722 | — | — |
| 628-201 | 1 | San Francisco: Central DA | Landline or VoIP | TELEPORT COMMUNICATIONS AMERICA, LLC - CA (7145) | SAN FRANCISCO | 722 | — | — |
| 628-201 | 2 | San Francisco: Central DA | Landline or VoIP | TELEPORT COMMUNICATIONS AMERICA, LLC - CA (7145) | SAN FRANCISCO | 722 | — | — |
| 628-201 | 3 | San Francisco: Central DA | Landline or VoIP | TELEPORT COMMUNICATIONS AMERICA, LLC - CA (7145) | SAN FRANCISCO | 722 | — | — |
| 628-201 | 4 | San Francisco: Central DA | Landline or VoIP | COMCAST PHONE OF CALIFORNIA, LLC (394L) | OKLDCA03XOY | 722 | — | — |
| 628-201 | 5 | San Francisco: Central DA | Landline or VoIP | ONVOY, LLC - CA (649C) | SAN FRANCISCO | 722 | — | — |
| 628-201 | 6 | San Francisco: Central DA | Landline or VoIP | ONVOY, LLC - CA (649C) | SAN FRANCISCO | 722 | — | — |
| 628-201 | 7 | San Francisco: Central DA | Landline or VoIP | ONVOY, LLC - CA (649C) | SAN FRANCISCO | 722 | — | — |
| 628-201 | 8 | San Francisco: Central DA | Landline or VoIP | IP HORIZON LLC (515J) | — | 722 | — | — |
| 628-201 | 9 | San Francisco: Central DA | Landline or VoIP | PEERLESS NETWORK OF CALIFORNIA, LLC - CA (373F) | SAN JOSE | 722 | — | — |
| 628-201 | A | San Francisco: Central DA | Landline or VoIP | ONVOY, LLC - CA (649C) | SAN FRANCISCO | 722 | — | — |
| 628-202 | 0 | Belvedere | Landline or VoIP | IP HORIZON LLC (515J) | — | 722 | — | — |
| 628-202 | 1 | Belvedere | Landline or VoIP | IP HORIZON LLC (515J) | — | 722 | — | — |
| 628-202 | 2 | Belvedere | Wireless | T-MOBILE USA, INC. (6529) | OKLECAZV1MD | 722 | — | — |
| 628-202 | 3 | Belvedere | Landline or VoIP | TELNYX LLC (073H) | SNJUCACL3MD | 722 | — | — |
| 628-202 | 4 | Belvedere | Wireless | T-MOBILE USA, INC. (6529) | OKLECAZV1MD | 722 | — | — |
| 628-202 | 5 | Belvedere | Landline or VoIP | TELNYX LLC (073H) | SNJUCACL3MD | 722 | — | — |
| 628-202 | 6 | Belvedere | Wireless | T-MOBILE USA, INC. (6529) | OKLECAZV1MD | 722 | — | — |
| 628-202 | 7 | Belvedere | Landline or VoIP | PEERLESS NETWORK OF CALIFORNIA, LLC - CA (373F) | SAN JOSE | 722 | — | — |
| 628-202 | 8 | Belvedere | Landline or VoIP | TELNYX LLC (073H) | SNJUCACL3MD | 722 | — | — |
| 628-202 | 9 | Belvedere | Wireless | T-MOBILE USA, INC. (6529) | OKLECAZV1MD | 722 | — | — |
| 628-202 | A | Belvedere | Wireless | T-MOBILE USA, INC. (6529) | OKLECAZV1MD | 722 | — | — |
| 628-203 | 0 | Stinson Beach-Bolinas | Landline or VoIP | ONVOY, LLC - CA (649C) | SAN FRANCISCO | 722 | — | — |
| 628-203 | 1 | Stinson Beach-Bolinas | Landline or VoIP | ONVOY, LLC - CA (649C) | SAN FRANCISCO | 722 | — | — |
| 628-203 | 2 | Stinson Beach-Bolinas | Landline or VoIP | ONVOY, LLC - CA (649C) | SAN FRANCISCO | 722 | — | — |
| 628-203 | 3 | Stinson Beach-Bolinas | Landline or VoIP | ONVOY, LLC - CA (649C) | SAN FRANCISCO | 722 | — | — |
| 628-203 | 4 | Stinson Beach-Bolinas | Landline or VoIP | ONVOY, LLC - CA (649C) | SAN FRANCISCO | 722 | — | — |
| 628-203 | 5 | Stinson Beach-Bolinas | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - CA (981E) | SNFCCA21XUY | 722 | — | — |
| 628-203 | 6 | Stinson Beach-Bolinas | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - CA (981E) | SNFCCA21XUY | 722 | — | — |
| 628-203 | 7 | Stinson Beach-Bolinas | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - CA (981E) | SNFCCA21XUY | 722 | — | — |
| 628-203 | 8 | Stinson Beach-Bolinas | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - CA (981E) | SNFCCA21XUY | 722 | — | — |
| 628-203 | 9 | Stinson Beach-Bolinas | Landline or VoIP | ONVOY, LLC - CA (649C) | SAN FRANCISCO | 722 | — | — |
| 628-203 | A | Stinson Beach-Bolinas | Landline or VoIP | ONVOY, LLC - CA (649C) | SAN FRANCISCO | 722 | — | — |
| 628-204 | 0 | Nicasio | Landline or VoIP | IP HORIZON LLC (515J) | — | 722 | — | — |
| 628-204 | 1 | Nicasio | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - CA (981E) | SNFCCA21XUY | 722 | — | — |
| 628-204 | 2 | Nicasio | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - CA (981E) | SNFCCA21XUY | 722 | — | — |
| 628-204 | 3 | Nicasio | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - CA (981E) | SNFCCA21XUY | 722 | — | — |
| 628-204 | 4 | Nicasio | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - CA (981E) | SNFCCA21XUY | 722 | — | — |
| 628-204 | 5 | Nicasio | Landline or VoIP | ONVOY, LLC - CA (649C) | SAN FRANCISCO | 722 | — | — |
| 628-204 | 6 | Nicasio | Landline or VoIP | ONVOY, LLC - CA (649C) | SAN FRANCISCO | 722 | — | — |
| 628-204 | 7 | Nicasio | Landline or VoIP | PEERLESS NETWORK OF CALIFORNIA, LLC - CA (373F) | SAN JOSE | 722 | — | — |
| 628-204 | 8 | Nicasio | Landline or VoIP | ONVOY, LLC - CA (649C) | SAN FRANCISCO | 722 | — | — |
| 628-204 | 9 | Nicasio | Wireless | T-MOBILE USA, INC. (6529) | OKLECAZV1MD | 722 | — | — |
| 628-204 | A | Nicasio | Wireless | T-MOBILE USA, INC. (6529) | OKLECAZV1MD | 722 | — | — |
| 628-205 | 0 | San Francisco: Central DA | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA (6006) | HYWRCAMCDMD | 722 | — | — |
| 628-205 | 1 | San Francisco: Central DA | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA (6006) | HYWRCAMCDMD | 722 | — | — |
| 628-205 | 2 | San Francisco: Central DA | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA (6006) | HYWRCAMCDMD | 722 | — | — |
| 628-205 | 3 | San Francisco: Central DA | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA (6006) | HYWRCAMCDMD | 722 | — | — |
| 628-205 | 4 | San Francisco: Central DA | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA (6006) | HYWRCAMCDMD | 722 | — | — |
| 628-205 | 5 | San Francisco: Central DA | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA (6006) | HYWRCAMCDMD | 722 | — | — |
| 628-205 | 6 | San Francisco: Central DA | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA (6006) | HYWRCAMCDMD | 722 | — | — |
| 628-205 | 7 | San Francisco: Central DA | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA (6006) | HYWRCAMCDMD | 722 | — | — |
| 628-205 | 8 | San Francisco: Central DA | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA (6006) | HYWRCAMCDMD | 722 | — | — |
| 628-205 | 9 | San Francisco: Central DA | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA (6006) | HYWRCAMCDMD | 722 | — | — |
| 628-205 | A | San Francisco: Central DA | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA (6006) | HYWRCAMCDMD | 722 | — | — |
| 628-206 | 0 | San Francisco: Central DA | Landline | PACIFIC BELL (9740) | SAN FRANCISCO 25TH STREET | 722 | — | — |
| 628-206 | 1 | San Francisco: Central DA | Landline | PACIFIC BELL (9740) | SAN FRANCISCO 25TH STREET | 722 | — | — |
| 628-206 | 2 | San Francisco: Central DA | Landline | PACIFIC BELL (9740) | SAN FRANCISCO 25TH STREET | 722 | — | — |
| 628-206 | 3 | San Francisco: Central DA | Landline | PACIFIC BELL (9740) | SAN FRANCISCO 25TH STREET | 722 | — | — |
| 628-206 | 4 | San Francisco: Central DA | Landline | PACIFIC BELL (9740) | SAN FRANCISCO 25TH STREET | 722 | — | — |
| 628-206 | 5 | San Francisco: Central DA | Landline | PACIFIC BELL (9740) | SAN FRANCISCO 25TH STREET | 722 | — | — |
| 628-206 | 6 | San Francisco: Central DA | Landline | PACIFIC BELL (9740) | SAN FRANCISCO 25TH STREET | 722 | — | — |
| 628-206 | 7 | San Francisco: Central DA | Landline | PACIFIC BELL (9740) | SAN FRANCISCO 25TH STREET | 722 | — | — |
| 628-206 | 8 | San Francisco: Central DA | Landline | PACIFIC BELL (9740) | SAN FRANCISCO 25TH STREET | 722 | — | — |
| 628-206 | 9 | San Francisco: Central DA | Landline | PACIFIC BELL (9740) | SAN FRANCISCO 25TH STREET | 722 | — | — |
| 628-206 | A | San Francisco: Central DA | Landline | PACIFIC BELL (9740) | SAN FRANCISCO 25TH STREET | 722 | — | — |
| 628-207 | 0 | San Francisco: Montrose-Evergreen DA | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - CA (981E) | SNFCCA21XUY | 722 | — | — |
| 628-207 | 1 | San Francisco: Montrose-Evergreen DA | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - CA (981E) | SNFCCA21XUY | 722 | — | — |
| 628-207 | 2 | San Francisco: Montrose-Evergreen DA | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - CA (981E) | SNFCCA21XUY | 722 | — | — |
| 628-207 | 3 | San Francisco: Montrose-Evergreen DA | Landline or VoIP | IP HORIZON LLC (515J) | — | 722 | — | — |
| 628-207 | 4 | San Francisco: Montrose-Evergreen DA | Landline or VoIP | ONVOY, LLC - CA (649C) | SAN FRANCISCO | 722 | — | — |
| 628-207 | 5 | San Francisco: Montrose-Evergreen DA | Landline or VoIP | ONVOY, LLC - CA (649C) | SAN FRANCISCO | 722 | — | — |
| 628-207 | 6 | San Francisco: Montrose-Evergreen DA | Landline or VoIP | ONVOY, LLC - CA (649C) | SAN FRANCISCO | 722 | — | — |
| 628-207 | 7 | San Francisco: Montrose-Evergreen DA | Landline or VoIP | SONIC TELECOM, LLC - CA (433E) | SANTA ROSA | 722 | — | — |
| 628-207 | 8 | San Francisco: Montrose-Evergreen DA | Landline or VoIP | PEERLESS NETWORK OF CALIFORNIA, LLC - CA (373F) | SAN JOSE | 722 | — | — |
| 628-207 | 9 | San Francisco: Montrose-Evergreen DA | Wireless | T-MOBILE USA, INC. (6529) | OKLECAZV1MD | 722 | — | — |
| 628-207 | A | San Francisco: Montrose-Evergreen DA | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - CA (981E) | SNFCCA21XUY | 722 | — | — |
| 628-208 | 0 | San Francisco: Central DA | Landline or VoIP | VONAGE AMERICA LLC (197D) | SNJUCACL2MD | 722 | — | — |
| 628-208 | 1 | San Francisco: Central DA | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA (6006) | HYWRCAMCDMD | 722 | — | — |
| 628-208 | 2 | San Francisco: Central DA | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA (6006) | HYWRCAMCDMD | 722 | — | — |
| 628-208 | 3 | San Francisco: Central DA | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA (6006) | HYWRCAMCDMD | 722 | — | — |
| 628-208 | 4 | San Francisco: Central DA | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA (6006) | HYWRCAMCDMD | 722 | — | — |
| 628-208 | 5 | San Francisco: Central DA | Landline or VoIP | LEVEL 3 COMMUNICATIONS, LLC - CA (8826) | SNFCCASY5MD | 722 | — | — |
| 628-208 | 6 | San Francisco: Central DA | Landline or VoIP | LEVEL 3 COMMUNICATIONS, LLC - CA (8826) | SNFCCASY5MD | 722 | — | — |
| 628-208 | 7 | San Francisco: Central DA | Landline or VoIP | PEERLESS NETWORK OF CALIFORNIA, LLC - CA (373F) | SAN JOSE | 722 | — | — |
| 628-208 | 8 | San Francisco: Central DA | Landline or VoIP | TELEPORT COMMUNICATIONS AMERICA, LLC - CA (7145) | SNRSCA01KMD | 722 | — | — |
| 628-208 | 9 | San Francisco: Central DA | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA (6006) | HYWRCAMCDMD | 722 | — | — |
| 628-208 | A | San Francisco: Central DA | Landline or VoIP | VONAGE AMERICA LLC (197D) | SNJUCACL2MD | 722 | — | — |
| 628-209 | 0 | Novato | Landline or VoIP | ONVOY, LLC - CA (649C) | SAN FRANCISCO | 722 | — | — |
Block-level assignments from the North American Numbering Plan administrator, via localcallingguide.com.
Assigned Prefixes
193
Assignment Blocks
2,055
Rate Centers
14
Carriers of Record
42
| Type | Blocks | Share |
|---|---|---|
| Landline | 17 | 1% |
| Landline or VoIP | 1,314 | 64% |
| Wireless | 724 | 35% |
| Carrier | Blocks |
|---|---|
| ONVOY, LLC - CA | 499 |
| T-MOBILE USA, INC. | 311 |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 204 |
| TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 171 |
| BANDWIDTH.COM CLEC, LLC - CA | 155 |
| NEW CINGULAR WIRELESS PCS, LLC | 129 |
| FRACTEL, LLC | 76 |
| ONVOY SPECTRUM, LLC | 75 |
| LEVEL 3 COMMUNICATIONS, LLC - CA | 74 |
| PEERLESS NETWORK OF CALIFORNIA, LLC - CA | 64 |
| 32 other carriers | 297 |
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 |
|---|---|---|
| San Francisco: Central DA | 76 | 836 |
| San Francisco: Montrose-Evergreen DA | 26 | 275 |
| San Rafael | 17 | 173 |
| San Francisco: Juniper DA | 14 | 152 |
| Belvedere | 10 | 106 |
| Corte Madera | 7 | 71 |
| Mill Valley | 7 | 74 |
| Novato | 7 | 77 |
| Sausalito | 7 | 65 |
| Ignacio | 6 | 60 |
| Nicasio | 5 | 47 |
| Inverness | 4 | 44 |
| Point Reyes | 4 | 44 |
| Stinson Beach-Bolinas | 3 | 31 |
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 628 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. 628 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 628 covers 12 cities and communities in California, including Belvedere, Corte Madera, Ignacio, Inverness, Mill Valley, and 7 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 628 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 628 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 + 628 + 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 1 628 XXX XXXX. The country code for both the United States and Canada in NANP is +1.
Format 628 numbers using E.164 notation as required by RFC 3966: prefix with +1 and omit dashes and parentheses (e.g., +16285550100). This format ensures tel: links work correctly on all mobile browsers and VoIP apps. See the tel: URI formatting guide for complete examples.