California, United States
Pacific Time
6:39 PM
Area Code
657
State / Province
California
Country
United States
Time Zone
Pacific Time
Area code 657 covers 13 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:+16575550100">+16575550100</a><a href="tel:+16575550199">+16575550199</a>Look up which exchange in California a specific 657 number is homed to, and whether its block is wireline or wireless. See what a reverse lookup can establish before relying on the answer.
692 active prefixes in this area code, assigned as 7,562 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 7,562
| NPA-NXX | Block | Rate centre | Type | Carrier (OCN) | Switch | LATA | LIR | Dates |
|---|---|---|---|---|---|---|---|---|
| 657-200 | 0 | Westminster | Landline or VoIP | METROPCS NETWORKS, LLC (899D) | TRNECAGBGT3 | 730 | — | — |
| 657-200 | 1 | Westminster | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - CA (981E) | LSANCA039MD | 730 | — | — |
| 657-200 | 2 | Westminster | Landline or VoIP | MCIMETRO ACCESS TRANSMISSION SERVICES LLC (7229) | BLOOMINGTON | 730 | — | — |
| 657-200 | 3 | Westminster | Landline or VoIP | ONVOY, LLC - CA (649C) | LNBHCAXPXBY | 730 | — | — |
| 657-200 | 4 | Westminster | Landline or VoIP | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS (671J) | IRVNCASM1MD | 730 | — | — |
| 657-200 | 5 | Westminster | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - CA (981E) | LSANCA039MD | 730 | — | — |
| 657-200 | 6 | Westminster | Landline or VoIP | LEVEL 3 COMMUNICATIONS, LLC - CA (8826) | LOS ANGELES | 730 | — | — |
| 657-200 | 7 | Westminster | Landline or VoIP | COMCAST PHONE OF CALIFORNIA, LLC (394L) | ANHMCA01XRY | 730 | — | — |
| 657-200 | 8 | Westminster | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - CA (981E) | LSANCA039MD | 730 | — | — |
| 657-200 | 9 | Westminster | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - CA (981E) | LSANCA039MD | 730 | — | — |
| 657-200 | A | Westminster | Landline or VoIP | METROPCS NETWORKS, LLC (899D) | TRNECAGBGT3 | 730 | — | — |
| 657-201 | 0 | Anaheim | Landline or VoIP | METROPCS NETWORKS, LLC (899D) | TRNECAGB7MD | 730 | — | — |
| 657-201 | 1 | Anaheim | Landline or VoIP | ONVOY, LLC - CA (649C) | LOS ANGELES | 730 | — | — |
| 657-201 | 2 | Anaheim | Wireless | T-MOBILE USA, INC. (6529) | TRNECAGB7MD | 730 | — | — |
| 657-201 | 3 | Anaheim | Landline or VoIP | TWC IP ENABLED SERVICES, LLC (793K) | SHOKCA02QMD | 730 | — | — |
| 657-201 | 4 | Anaheim | Landline or VoIP | LEVEL 3 COMMUNICATIONS, LLC - CA (8826) | LOS ANGELES | 730 | — | — |
| 657-201 | 5 | Anaheim | Landline or VoIP | LEVEL 3 COMMUNICATIONS, LLC - CA (8826) | LOS ANGELES | 730 | — | — |
| 657-201 | 6 | Anaheim | Landline or VoIP | METROPCS NETWORKS, LLC (899D) | TRNECAGB7MD | 730 | — | — |
| 657-201 | 7 | Anaheim | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - CA (981E) | LSANCA039MD | 730 | — | — |
| 657-201 | 8 | Anaheim | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - CA (981E) | LSANCA039MD | 730 | — | — |
| 657-201 | 9 | Anaheim | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - CA (981E) | LSANCA039MD | 730 | — | — |
| 657-201 | A | Anaheim | Landline or VoIP | METROPCS NETWORKS, LLC (899D) | TRNECAGB7MD | 730 | — | — |
| 657-202 | 0 | Anaheim | Landline or VoIP | PEERLESS NETWORK OF CALIFORNIA, LLC - CA (373F) | LOS ANGELES | 730 | — | — |
| 657-202 | 1 | Anaheim | Landline or VoIP | ONVOY, LLC - CA (649C) | LOS ANGELES | 730 | — | — |
| 657-202 | 2 | Anaheim | Landline or VoIP | ONVOY, LLC - CA (649C) | LOS ANGELES | 730 | — | — |
| 657-202 | 3 | Anaheim | Landline or VoIP | ONVOY, LLC - CA (649C) | LOS ANGELES | 730 | — | — |
| 657-202 | 4 | Anaheim | Landline or VoIP | ONVOY, LLC - CA (649C) | LOS ANGELES | 730 | — | — |
| 657-202 | 5 | Anaheim | Landline or VoIP | PEERLESS NETWORK OF CALIFORNIA, LLC - CA (373F) | LOS ANGELES | 730 | — | — |
| 657-202 | 6 | Anaheim | Landline or VoIP | PEERLESS NETWORK OF CALIFORNIA, LLC - CA (373F) | LOS ANGELES | 730 | — | — |
| 657-202 | 7 | Anaheim | Landline or VoIP | ONVOY, LLC - CA (649C) | LOS ANGELES | 730 | — | — |
| 657-202 | 8 | Anaheim | Landline or VoIP | ONVOY, LLC - CA (649C) | LOS ANGELES | 730 | — | — |
| 657-202 | 9 | Anaheim | Landline or VoIP | PEERLESS NETWORK OF CALIFORNIA, LLC - CA (373F) | LOS ANGELES | 730 | — | — |
| 657-202 | A | Anaheim | Landline or VoIP | PEERLESS NETWORK OF CALIFORNIA, LLC - CA (373F) | LOS ANGELES | 730 | — | — |
| 657-203 | 0 | Huntington Beach | Landline or VoIP | LEVEL 3 COMMUNICATIONS, LLC - CA (8826) | LOS ANGELES | 730 | — | — |
| 657-203 | 1 | Huntington Beach | Wireless | T-MOBILE USA, INC. (6529) | TRNECAGBGT3 | 730 | — | — |
| 657-203 | 2 | Huntington Beach | Landline or VoIP | MCIMETRO ACCESS TRANSMISSION SERVICES LLC (7229) | BLOOMINGTON | 730 | — | — |
| 657-203 | 3 | Huntington Beach | Wireless | NEW CINGULAR WIRELESS PCS, LLC (6010) | ANAHEIM | 730 | — | — |
| 657-203 | 4 | Huntington Beach | Wireless | NEW CINGULAR WIRELESS PCS, LLC (6010) | ANAHEIM | 730 | — | — |
| 657-203 | 5 | Huntington Beach | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA (6006) | BLTNCAADGMD | 730 | — | — |
| 657-203 | 6 | Huntington Beach | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA (6006) | BLTNCAADGMD | 730 | — | — |
| 657-203 | 7 | Huntington Beach | Wireless | NEW CINGULAR WIRELESS PCS, LLC (6010) | ANAHEIM | 730 | — | — |
| 657-203 | 8 | Huntington Beach | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - CA (981E) | LSANCA039MD | 730 | — | — |
| 657-203 | 9 | Huntington Beach | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA (6006) | BLTNCAADGMD | 730 | — | — |
| 657-203 | A | Huntington Beach | Landline or VoIP | LEVEL 3 COMMUNICATIONS, LLC - CA (8826) | LOS ANGELES | 730 | — | — |
| 657-204 | 0 | Huntington Beach | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - CA (981E) | LSANCA039MD | 730 | — | — |
| 657-204 | 1 | Huntington Beach | Landline or VoIP | LEVEL 3 COMMUNICATIONS, LLC - CA (8826) | LOS ANGELES | 730 | — | — |
| 657-204 | 2 | Huntington Beach | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - CA (981E) | LSANCA039MD | 730 | — | — |
| 657-204 | 3 | Huntington Beach | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - CA (981E) | LSANCA039MD | 730 | — | — |
| 657-204 | 4 | Huntington Beach | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - CA (981E) | LSANCA039MD | 730 | — | — |
| 657-204 | 5 | Huntington Beach | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - CA (981E) | LSANCA039MD | 730 | — | — |
| 657-204 | 6 | Huntington Beach | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - CA (981E) | LSANCA039MD | 730 | — | — |
| 657-204 | 7 | Huntington Beach | Landline or VoIP | MCIMETRO ACCESS TRANSMISSION SERVICES LLC (7229) | BLOOMINGTON | 730 | — | — |
| 657-204 | 8 | Huntington Beach | Landline or VoIP | MCIMETRO ACCESS TRANSMISSION SERVICES LLC (7229) | BLOOMINGTON | 730 | — | — |
| 657-204 | 9 | Huntington Beach | Landline or VoIP | TWC IP ENABLED SERVICES, LLC (793K) | LNBHCAXP2MD | 730 | — | — |
| 657-204 | A | Huntington Beach | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - CA (981E) | LSANCA039MD | 730 | — | — |
| 657-205 | 0 | Santa Ana | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - CA (981E) | LSANCA039MD | 730 | — | — |
| 657-205 | 1 | Santa Ana | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - CA (981E) | LSANCA039MD | 730 | — | — |
| 657-205 | 2 | Santa Ana | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - CA (981E) | LSANCA039MD | 730 | — | — |
| 657-205 | 3 | Santa Ana | Landline or VoIP | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA (7240) | IRVINE | 730 | — | — |
| 657-205 | 4 | Santa Ana | Landline or VoIP | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA (7240) | IRVINE | 730 | — | — |
| 657-205 | 5 | Santa Ana | Landline or VoIP | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA (7240) | IRVINE | 730 | — | — |
| 657-205 | 6 | Santa Ana | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - CA (981E) | LSANCA039MD | 730 | — | — |
| 657-205 | 7 | Santa Ana | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - CA (981E) | LSANCA039MD | 730 | — | — |
| 657-205 | 8 | Santa Ana | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - CA (981E) | LSANCA039MD | 730 | — | — |
| 657-205 | 9 | Santa Ana | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - CA (981E) | LNBHCAXPXQX | 730 | — | — |
| 657-205 | A | Santa Ana | Landline or VoIP | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA (7240) | IRVINE | 730 | — | — |
| 657-206 | 0 | Garden Grove | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - CA (981E) | LSANCA039MD | 730 | — | — |
| 657-206 | 1 | Garden Grove | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - CA (981E) | LSANCA039MD | 730 | — | — |
| 657-206 | 2 | Garden Grove | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - CA (981E) | LSANCA039MD | 730 | — | — |
| 657-206 | 3 | Garden Grove | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - CA (981E) | LSANCA039MD | 730 | — | — |
| 657-206 | 4 | Garden Grove | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - CA (981E) | LSANCA039MD | 730 | — | — |
| 657-206 | 5 | Garden Grove | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - CA (981E) | LSANCA039MD | 730 | — | — |
| 657-206 | 6 | Garden Grove | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - CA (981E) | LSANCA039MD | 730 | — | — |
| 657-206 | 7 | Garden Grove | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - CA (981E) | LSANCA039MD | 730 | — | — |
| 657-206 | 8 | Garden Grove | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - CA (981E) | LSANCA039MD | 730 | — | — |
| 657-206 | 9 | Garden Grove | Wireless | T-MOBILE USA, INC. (6529) | TRNECAGB7MD | 730 | — | — |
| 657-206 | A | Garden Grove | Wireless | T-MOBILE USA, INC. (6529) | TRNECAGB7MD | 730 | — | — |
| 657-207 | 0 | Anaheim | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - CA (981E) | LSANCA039MD | 730 | — | — |
| 657-207 | 1 | Anaheim | Landline or VoIP | MCIMETRO ACCESS TRANSMISSION SERVICES LLC (7229) | BLOOMINGTON | 730 | — | — |
| 657-207 | 2 | Anaheim | Landline or VoIP | MCIMETRO ACCESS TRANSMISSION SERVICES LLC (7229) | BLOOMINGTON | 730 | — | — |
| 657-207 | 3 | Anaheim | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - CA (981E) | LSANCA039MD | 730 | — | — |
| 657-207 | 4 | Anaheim | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - CA (981E) | LSANCA039MD | 730 | — | — |
| 657-207 | 5 | Anaheim | Landline or VoIP | LEVEL 3 COMMUNICATIONS, LLC - CA (8826) | LOS ANGELES | 730 | — | — |
| 657-207 | 6 | Anaheim | Landline or VoIP | MCIMETRO ACCESS TRANSMISSION SERVICES LLC (7229) | BLOOMINGTON | 730 | — | — |
| 657-207 | 7 | Anaheim | Landline or VoIP | MCIMETRO ACCESS TRANSMISSION SERVICES LLC (7229) | BLOOMINGTON | 730 | — | — |
| 657-207 | 8 | Anaheim | Landline or VoIP | ONVOY, LLC - CA (649C) | LOS ANGELES | 730 | — | — |
| 657-207 | 9 | Anaheim | Landline or VoIP | MCIMETRO ACCESS TRANSMISSION SERVICES LLC (7229) | BLOOMINGTON | 730 | — | — |
| 657-207 | A | Anaheim | Landline or VoIP | METROPCS NETWORKS, LLC (899D) | TRNECAGB7MD | 730 | — | — |
| 657-208 | 0 | Anaheim | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - CA (981E) | LSANCA039MD | 730 | — | — |
| 657-208 | 1 | Anaheim | Landline or VoIP | TWC IP ENABLED SERVICES, LLC (793K) | SHOKCA02QMD | 730 | — | — |
| 657-208 | 2 | Anaheim | Landline or VoIP | ONVOY, LLC - CA (649C) | LOS ANGELES | 730 | — | — |
| 657-208 | 3 | Anaheim | Landline or VoIP | AT&T CORP. (516C) | ANHMCA01XEY | 730 | — | — |
| 657-208 | 4 | Anaheim | Landline or VoIP | LEVEL 3 COMMUNICATIONS, LLC - CA (8826) | LOS ANGELES | 730 | — | — |
| 657-208 | 5 | Anaheim | Landline or VoIP | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA (7240) | IRVINE | 730 | — | — |
| 657-208 | 6 | Anaheim | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - CA (981E) | LSANCA039MD | 730 | — | — |
| 657-208 | 7 | Anaheim | Landline or VoIP | ONVOY, LLC - CA (649C) | LOS ANGELES | 730 | — | — |
| 657-208 | 8 | Anaheim | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - CA (981E) | LSANCA039MD | 730 | — | — |
| 657-208 | 9 | Anaheim | Landline or VoIP | LEVEL 3 COMMUNICATIONS, LLC - CA (8826) | LOS ANGELES | 730 | — | — |
| 657-208 | A | Anaheim | Landline or VoIP | ONVOY, LLC - CA (649C) | LOS ANGELES | 730 | — | — |
| 657-209 | 0 | Silverado | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA (6006) | BLTNCAADGMD | 730 | — | — |
Block-level assignments from the North American Numbering Plan administrator, via localcallingguide.com.
Assigned Prefixes
692
Assignment Blocks
7,562
Rate Centers
13
Carriers of Record
40
| Type | Blocks | Share |
|---|---|---|
| Landline | 16 | 0% |
| Landline or VoIP | 1,609 | 21% |
| Wireless | 5,937 | 79% |
| Carrier | Blocks |
|---|---|
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 4,906 |
| T-MOBILE USA, INC. | 569 |
| ONVOY, LLC - CA | 487 |
| NEW CINGULAR WIRELESS PCS, LLC | 399 |
| BANDWIDTH.COM CLEC, LLC - CA | 332 |
| PEERLESS NETWORK OF CALIFORNIA, LLC - CA | 119 |
| LEVEL 3 COMMUNICATIONS, LLC - CA | 94 |
| TWC IP ENABLED SERVICES, LLC | 88 |
| FRACTEL, LLC | 82 |
| METROPCS NETWORKS, LLC | 61 |
| 30 other carriers | 425 |
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 |
|---|---|---|
| Anaheim | 159 | 1,738 |
| Huntington Beach | 138 | 1,518 |
| Santa Ana | 118 | 1,287 |
| Westminster | 59 | 649 |
| Silverado | 52 | 572 |
| Orange | 42 | 459 |
| Garden Grove | 30 | 320 |
| Cypress | 27 | 294 |
| Fullerton | 26 | 286 |
| Buena Park | 11 | 117 |
| Placentia | 11 | 115 |
| Yorba Linda | 11 | 121 |
| Brea | 8 | 86 |
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 657 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. 657 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 657 covers 13 cities and communities in California, including Anaheim, Brea, Buena Park, Cypress, Fullerton, and 8 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 657 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 657 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 + 657 + 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 1 657 XXX XXXX. The country code for both the United States and Canada in NANP is +1.
Format 657 numbers using E.164 notation as required by RFC 3966: prefix with +1 and omit dashes and parentheses (e.g., +16575550100). This format ensures tel: links work correctly on all mobile browsers and VoIP apps. See the tel: URI formatting guide for complete examples.