657 area code
| State | California |
| Primary City | Anaheim, CA |
| Timezone | Pacific |
Example of cities also covered by area code 657
Anaheim, CA
Buena Park, CA
Cypress, CA
Fullerton, CA
Garden Grove, CA
Huntington Beach, CA
Long Beach, CA
Orange, CA
Placentia, CA
Santa Ana, CA
Westminster, CA
Yorba Linda, CA
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657 area code prefixes
| 657-201 | ANAHEIM | METROPCS NETWORKS, LLC |
| 657-203 | HUNTITNBCH | LEVEL 3 COMMUNICATIONS, LLC - CA |
| 657-204 | HUNTITNBCH | BANDWIDTH.COM CLEC, LLC - CA |
| 657-205 | SANTA ANA | MCI WORLDCOM COMMUNICATIONS, INC., CA |
| 657-206 | GARDEN GRV | T-MOBILE USA, INC. |
| 657-207 | ANAHEIM | METROPCS NETWORKS, LLC |
| 657-208 | ANAHEIM | ONVOY, LLC - CA |
| 657-210 | SANTA ANA | BANDWIDTH.COM CLEC, LLC - CA |
| 657-212 | SANTA ANA | LEVEL 3 COMMUNICATIONS, LLC - CA |
| 657-214 | CYPRESS | BANDWIDTH.COM CLEC, LLC - CA |
| 657-215 | HUNTITNBCH | LEVEL 3 COMMUNICATIONS, LLC - CA |
| 657-216 | PLACENTIA | BANDWIDTH.COM CLEC, LLC - CA |
| 657-222 | CYPRESS | ONVOY, LLC - CA |
| 657-269 | SANTA ANA | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA |
| 657-278 | FULLERTON | PACIFIC BELL |
| 657-333 | ORANGE | BANDWIDTH.COM CLEC, LLC - CA |
| 657-444 | PLACENTIA | BANDWIDTH.COM CLEC, LLC - CA |
| 657-464 | HUNTITNBCH | BANDWIDTH.COM CLEC, LLC - CA |
| 657-549 | ANAHEIM | BANDWIDTH.COM CLEC, LLC - CA |
| 657-622 | SANTA ANA | PACIFIC BELL |
| 657-666 | WESTMINSTR | ONVOY, LLC - CA |
| 657-777 | CYPRESS | BANDWIDTH.COM CLEC, LLC - CA |
| 657-859 | SANTA ANA | COX CALIFORNIA TELCOM, LLC - CA |
| 657-888 | ORANGE | BANDWIDTH.COM CLEC, LLC - CA |