Area Code — 858

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Phone numbers in area code 858 cover the cities of Carlsbad, Del Mar, La Jolla, Poway, Rancho Santa Fe, Rcho Santa Fe, Solana Beach, Ucsb, Ucsd, Pacific Beach, San Diego, Rancho Bernardo, Mcrd San Diego, V A Hosp, San Diego Gas And Electric, San Diego Water Utilities in CA

The 858 area code covers the zip codes 92013, 92014, 92037, 92038, 92039, 92064, 92067, 92074, 92075, 92091, 92092, 92093, 92109, 92111, 92117, 92121, 92122, 92123, 92124, 92126, 92127, 92128, 92129, 92130, 92131, 92140, 92161, 92169, 92171, 92172, 92177, 92184, 92187, 92191, 92192, 92196, 92197, 92198, 92199 in CA

Rate centers: LA JOLLA, SNDG MRMS, POWAY, DEL MAR, RNCHOBRNDO, RNCHOPNQTS, SNDG LVTA, RNCHOSANFE, SNDG0290T

Companies: U.S. TELEPACIFIC CORP., PAETEC COMMUNICATIONS, INC., NEW CINGULAR WIRELESS PCS, LLC, MCI WORLDCOM COMMUNICATIONS, INC., CA, LEVEL 3 COMMUNICATIONS, LLC, NEXTEL COMMUNICATIONS, INC., CBEYOND COMMUNICATIONS, LLC, T-MOBILE USA, INC., PACIFIC BELL, COX CALIFORNIA TELCOM, INC., CELLCO PARTNERSHIP DBA VERIZON WIRELESS, YMAX COMMUNICATIONS CORP., TELEPORT COMMUNICATIONS GROUP - SAN DIEGO, O1 COMMUNICATIONS, INC., BANDWIDTH.COM CLEC, LLC, XO CALIFORNIA, INC., PAC - WEST TELECOMM, INC., SPRINT SPECTRUM L.P., LEAP WIRELESS INTL, INC. DBA CRICKET COMM, INC., PACIFIC CENTREX SERVICES, INC., SPRINT COMMUNICATIONS COMPANY, L.P., AMERICAN MESSAGING SERVICES, LLC, TW TELECOM OF CALIFORNIA LP, TELCENTRIS COMMUNICATIONS, LLC, SBC INTERNET SERVICES, INC., NORTH COUNTY COMMUNICATIONS CORP., INFOTELECOM, LLC, GLOBAL CROSSING LOCAL SERVICES, INC., AT&T LOCAL, TELSCAPE COMMUNICATONS, INC., USA MOBILITY WIRELESS, INC., MPOWER COMMUNICATIONS CORP, COOK TELECOM, INC., ALLEGIANCE TELECOM, INC., 360NETWORKS (USA) INC., TCAST COMMUNICATIONS, INC., UTILITY TELEPHONE, INC., AMERICAN MESSAGING (AM), INC., CF COMMUNICATIONS, LLC DBA TELEKENEX, VAYA TELECOM, INC., NETWORK SERVICES LLC (TSR)

List of 858 Area-Code Phone Number Prefixes

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