657 Area Code has 50 prefixes

PrefixPrimary CityCarrier
657-200Los AngelesMetropcs Networks, Llc
657-201RiversideMetropcs Networks, Llc
657-203AnaheimLevel 3 Communications, Llc - Ca
657-204Los AngelesBandwidth.com Clec, Llc - Ca
657-205Los AngelesMci Worldcom Communications, Inc., Ca
657-206Los AngelesT-mobile Usa, Inc.
657-207Santa AnaMetropcs Networks, Llc
657-208Los AngelesNeutral Tandem-california, Llc - Ca
657-210Long BeachBandwidth.com Clec, Llc - Ca
657-212Los AngelesLevel 3 Communications, Llc - Ca
657-214Los AngelesBandwidth.com Clec, Llc - Ca
657-215Los AngelesLevel 3 Communications, Llc - Ca
657-216Los AngelesBandwidth.com Clec, Llc - Ca
657-217Los AngelesBandwidth.com Clec, Llc - Ca
657-218Sherman OaksTime Warner Cbl Info Svcs (ca) Dba Time Warner Cab
657-220Sherman OaksTime Warner Cbl Info Svcs (ca) Dba Time Warner Cab
657-221Los AngelesLevel 3 Communications, Llc - Ca
657-222Los AngelesCf Communications, Llc Dba Telekenex - Ca
657-223Los AngelesTime Warner Cbl Info Svcs (ca) Dba Time Warner Cab
657-224Los AngelesPeerless Network Of California, Llc - Ca
657-226Los AngelesBandwidth.com Clec, Llc - Ca
657-227Long BeachTime Warner Cbl Info Svcs (ca) Dba Time Warner Cab
657-229Los AngelesBandwidth.com Clec, Llc - Ca
657-231Los AngelesAt&t Corp.
657-232Los AngelesTime Warner Cbl Info Svcs (ca) Dba Time Warner Cab
657-233Los AngelesAt&t Corp.
657-235Los AngelesBandwidth.com Clec, Llc - Ca
657-236Santa AnaCellco Partnership Dba Verizon Wireless - Ca
657-237AnaheimLevel 3 Communications, Llc - Ca
657-238TorranceT-mobile Usa, Inc.
657-242Los AngelesLevel 3 Communications, Llc - Ca
657-243Santa AnaLevel 3 Communications, Llc - Ca
657-245Los AngelesPeerless Network Of California, Llc - Ca
657-251Santa AnaTime Warner Cbl Info Svcs (ca) Dba Time Warner Cab
657-269Santa AnaCellco Partnership Dba Verizon Wireless - Ca
657-378Los AngelesPeerless Network Of California, Llc - Ca
657-400Los AngelesCf Communications, Llc Dba Telekenex - Ca
657-444Los AngelesTelcentris Communications, Llc - Ca
657-464Los AngelesBandwidth.com Clec, Llc - Ca
657-500Los AngelesTelcentris Communications, Llc - Ca
657-529Los AngelesTelcentris Communications, Llc - Ca
657-549Los AngelesBandwidth.com Clec, Llc - Ca
657-600Santa AnaCf Communications, Llc Dba Telekenex - Ca
657-622Santa AnaPacific Bell
657-667Los AngelesTime Warner Cbl Info Svcs (ca) Dba Time Warner Cab
657-777Los AngelesTelcentris Communications, Llc - Ca
657-845Los AngelesTime Warner Cbl Info Svcs (ca) Dba Time Warner Cab
657-859Rancho Santa MargaritaCox California Telcom, Llc - Ca
657-888Los AngelesTelcentris Communications, Llc - Ca
657-900Los AngelesTelcentris Communications, Llc - Ca