510 Area Code has 685 prefixes

PrefixPrimary CityCarrier
510-200OaklandMetro Pcs, Inc.
510-201San JosePeerless Network Of California, Llc - Ca
510-202San FranciscoAmerican Messaging Services, Llc
510-204BerkeleyPacific Bell
510-205OaklandSprint Spectrum L.p.
510-206San FranciscoNew Cingular Wireless Pcs, Llc
510-207San FranciscoNew Cingular Wireless Pcs, Llc
510-208OaklandPacific Bell
510-209OaklandSprint Spectrum L.p.
510-210San FranciscoBandwidth.com Clec, Llc - Ca
510-212OaklandUsa Mobility Wireless, Inc.
510-213OaklandT-mobile Usa, Inc.
510-214HaywardMci Worldcom Communications, Inc., Ca
510-215RichmondPacific Bell
510-216Usa Mobility Wireless, Inc.
510-217San FranciscoTeleport Communications Group - San Francisco
510-218OaklandUsa Mobility Wireless, Inc.
510-219San FranciscoNew Cingular Wireless Pcs, Llc
510-220San FranciscoNew Cingular Wireless Pcs, Llc
510-221OaklandSprint Spectrum L.p.
510-222El SobrantePacific Bell
510-223El SobrantePacific Bell
510-224OaklandSprint Spectrum L.p.
510-225San FranciscoAllegiance Telecom, Inc. - Ca
510-226FremontPacific Bell
510-227PleasantonLevel 3 Telecom Of California, Lp - Ca
510-228OaklandMatrix Telecom, Llc. Sii Tnci - Ca
510-229OaklandPacific Bell
510-230OaklandT-mobile Usa, Inc.
510-231RichmondPacific Bell
510-232RichmondPacific Bell
510-233RichmondPacific Bell
510-234RichmondPacific Bell
510-235RichmondPacific Bell
510-236RichmondPacific Bell
510-237RichmondPacific Bell
510-238OaklandPacific Bell
510-239San JoseMpower Communications Corp - Ca
510-240OaklandLevel 3 Telecom Of California, Lp - Ca
510-242RichmondPacific Bell
510-243El SobrantePacific Bell
510-244San FranciscoBandwidth.com Clec, Llc - Ca
510-245HerculesPacific Bell
510-246PleasantonCellco Partnership Dba Verizon Wireless - Ca
510-247HaywardPacific Bell
510-248FremontMatrix Telecom, Llc. Sii Tnci - Ca
510-249FremontPacific Bell
510-250San JoseBroadwing Communications, Llc - Ca
510-251OaklandPacific Bell
510-252FremontPacific Bell
510-253OaklandLevel 3 Telecom Of California, Lp - Ca
510-254San FranciscoLevel 3 Communications, Llc - Ca
510-255San FranciscoBandwidth.com Clec, Llc - Ca
510-256San FranciscoO1 Communications, Inc. - Ca
510-257San JoseTeleport Communications Group - San Francisco
510-258OaklandPacific Bell
510-259HaywardPacific Bell
510-260San FranciscoComcast Phone Of California, Llc - Ca
510-261OaklandPacific Bell
510-262El SobrantePacific Bell
510-263AlamedaPacific Bell
510-264HaywardPacific Bell
510-265HaywardPacific Bell
510-266HaywardPacific Bell
510-267OaklandPacific Bell
510-268OaklandPacific Bell
510-269HaywardMci Worldcom Communications, Inc., Ca
510-270San FranciscoBrooks Fiber Communications Of California - Ca
510-271OaklandPacific Bell
510-272OaklandPacific Bell
510-273OaklandPacific Bell
510-274San FranciscoUtility Telecom Group, Llc - Ca
510-275OaklandMatrix Telecom, Llc. Sii Tnci - Ca
510-276San LeandroPacific Bell
510-277OaklandGlobal Crossing Local Services, Inc.-ca
510-278San LeandroPacific Bell
510-279OaklandMatrix Telecom, Llc. Sii Tnci - Ca
510-280FremontXo California, Inc.
510-281OaklandMatrix Telecom, Llc. Sii Tnci - Ca
510-282OaklandT-mobile Usa, Inc.
510-283OaklandAllegiance Telecom, Inc. - Ca
510-284FremontPacific Bell
510-285HaywardMci Worldcom Communications, Inc., Ca
510-286OaklandPacific Bell
510-287OaklandPacific Bell
510-288OaklandMatrix Telecom, Llc. Sii Tnci - Ca
510-289San FranciscoNew Cingular Wireless Pcs, Llc
510-290OaklandSprint Spectrum L.p.
510-291OaklandMatrix Telecom, Llc. Sii Tnci - Ca
510-292PleasantonPacific Bell
510-293HaywardPacific Bell
510-294San LeandroSprint Spectrum L.p.
510-295PleasantonMatrix Telecom, Llc. Sii Tnci - Ca
510-296San FranciscoLevel 3 Communications, Llc - Ca
510-297San LeandroPacific Bell
510-298ConcordNew Cingular Wireless Pcs, Llc
510-299PleasantonCellco Partnership Dba Verizon Wireless - Ca
510-300San JoseU.s. Telepacific Corp. - Ca
510-301PleasantonCellco Partnership Dba Verizon Wireless - Ca
510-302OaklandPacific Bell