Located in the Pacific (GMT -08:00) time zone. Area code 858 serves the state of California. This area code was assigned on June 30th, 1998. On June 12th, 1999 it went into service. 858 is a General Purpose Code. Dialing pattern for local calls within the same NPA (area code) is 7D.
Information for Area Code 858
Pacific (GMT -08:00)
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List of Cities in Area Code Overlay Complex 270
Rancho Santa Fe
List of Zip Codes in Area Code 858
SPs and Telephone companies in Area Code 270
Sprint Spectrum L.p.
Cf Communications, Llc Dba Telekenex - Ca
Level 3 Telecom Of California, Lp - Ca
Matrix Telecom, Llc. Sii Tnci - Ca
Mpower Communications Corp - Ca
Mci Worldcom Communications, Inc., Ca
T-mobile Usa, Inc.
New Cingular Wireless Pcs, Llc
Xo California, Inc.
Usa Mobility Wireless, Inc.
Cellco Partnership Dba Verizon Wireless - Ca
Telcentris Communications, Llc - Ca
Cox California Telcom, Llc - Ca
Teleport Communications America, Llc - Ca
American Messaging Services, Llc
Paetec Communications, Inc. - Ca
Level 3 Communications, Llc - Ca
Global Crossing Local Services, Inc.-ca
Network Services Llc (tsr)
U.s. Telepacific Corp. - Ca
T-Mobile Usa, Inc.
Comcast Phone Of California, Llc - CA
O1 Communications, Inc. - Ca
Neutral Tandem-california, Llc - Ca
Vaya Telecom, Inc. - Ca
Broadvox-clec, Llc - Ca
Bandwidth.com Clec, Llc - Ca
Time Warner Cbl Info Svcs (ca) Dba Time Warner Cab