Area Code — 650

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Phone numbers in area code 650 cover the cities of Belmont, Burlingame, Hillsborough, Colma, Daly City, Broadmoor Vlg, El Granada, Half Moon Bay, Princeton By The Sea, La Honda, Loma Mar, Los Altos, Los Altos Hills, Menlo Park, W Menlo Park, West Menlo Park, Atherton, Menlo Pk, Portola Valley, Portola Vally, Millbrae, Montara, Moss Beach, Mountain View, Blossom Valley, Mt View, Pacifica, Sharp Park, Pescadero, Redwood City, Woodside, Emerald Hills, Palomar Park, San Bruno, San Carlos, San Gregorio, S San Fran, S San Francisco, South San Francisco, Ssf, South San Francis, San Francisco, San Francisco Intnl Airport, Palo Alto, E Palo Alto, East Palo Alto, Stanford, San Mateo, Foster City, Postal Data Center in CA

The 650 area code covers the zip codes 94002, 94010, 94011, 94014, 94015, 94016, 94017, 94018, 94019, 94020, 94021, 94022, 94023, 94024, 94025, 94026, 94027, 94028, 94030, 94037, 94038, 94039, 94040, 94041, 94042, 94043, 94044, 94060, 94061, 94062, 94063, 94064, 94065, 94066, 94070, 94074, 94080, 94083, 94128, 94301, 94302, 94303, 94304, 94305, 94306, 94309, 94401, 94402, 94403, 94404, 94497 in CA

Rate centers: SAN MATEO, SSNFRNCSCO, MILLBRAE, WOODSIDE, REDWOOD CY, LOS ALTOS, MT VIEW, PALO ALTO, SNCRL-BLMT, PESCADERO, MOSS BEACH, SNFC JUNPR, HALFMOONBY, PACIFICA, LA HONDA, SNFC CNTRL, SNFC2143T

Companies: O1 COMMUNICATIONS, INC., BANDWIDTH.COM CLEC, LLC, T-MOBILE USA, INC., SPRINT SPECTRUM L.P., NEW CINGULAR WIRELESS PCS, LLC, THE TELEPHONE CONNECTION LOCAL SERVICES, LLC, TW TELECOM OF CALIFORNIA LP, LEVEL 3 COMMUNICATIONS, LLC, 360NETWORKS (USA) INC., XO CALIFORNIA, INC., BROADWING COMMUNICATIONS, LLC, USA MOBILITY WIRELESS, INC., MPOWER COMMUNICATIONS CORP, MCI WORLDCOM COMMUNICATIONS, INC., CA, CELLCO PARTNERSHIP DBA VERIZON WIRELESS, U.S. TELEPACIFIC CORP., COMCAST PHONE OF CALIFORNIA, LLC , PACIFIC BELL, YMAX COMMUNICATIONS CORP., PACIFIC CENTREX SERVICES, INC., GLOBAL CROSSING LOCAL SERVICES, INC., AMERICAN MESSAGING (AM), INC., AMERICAN MESSAGING SERVICES, LLC, NEXTEL COMMUNICATIONS, INC., SBC INTERNET SERVICES, INC., BROOKS FIBER COMMUNICATIONS OF CALIFORNIA, INFOTELECOM, LLC, PAC - WEST TELECOMM, INC., CBEYOND COMMUNICATIONS, LLC, CF COMMUNICATIONS, LLC DBA TELEKENEX, PEERLESS NETWORK OF CALIFORNIA, LLC, COOK TELECOM, INC., PAETEC COMMUNICATIONS, INC., TELEPORT COMMUNICATIONS GROUP - SAN FRANCISCO, AT&T LOCAL, METRO PCS, INC., ASTOUND BROADBAND, LLC, 33 WIRELESS INC., UTILITY TELEPHONE, INC., ALLEGIANCE TELECOM, INC., CREATIVE INTERCONNECT COMMUNICATIONS, LLC, MCIMETRO ACCESS TRANSMISSION SERVICES LLC, NORTH COUNTY COMMUNICATIONS CORP.

List of 650 Area-Code Phone Number Prefixes

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