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Updated Jan 02, 2010Area Code 858
  1. "E" is Eastern Time Zone, "C" is Central Time Zone, "M" is Mountain Time Zone, and "P" is Pacific Time Zone. Occasionally, an area code will fall in more than one time zone. In this case, the abbreviation is a combination of the previous abbreviations. Some area codes are shown with time zones referencing Universal Coordinated Time (UTC).
  2. Additional technical status can be retrived from the North American Numbering Plan Administration on the 858 area code specific link here.
Area Code858 (area code map)
LocationCalifornia
Dates and historical informationArea code 858 went live into service on June 12, 1999.  It was formed as a subdivision of the 619 area code.
Technical Status 2Area code 858 is currently live and in service.
Time Zone(s) 1P
LATA numbers served732
Number of rate centers served9
List of rate centersLA JOLLA, SNDG MRMS, POWAY, DEL MAR, RNCHOBRNDO, RNCHOPNQTS, SNDG LVTA, RNCHOSANFE, SNDG0290T
Number of major cities served9
Names of major cities served (ZIP code)La Jolla (92037), San Diego (92103), San Diego (92123), Poway (92064), Del Mar (92014), San Diego (92128), Rancho Bernardo (92128), Anaheim (92805), Federal (92805), San Diego (92129), Rancho Santa Fe (92067), San Diego (92111), San Diego (92109), Pacific Beach (92109), San Diego (92126), San Diego (92121)
Number of exchanges served370
List of exchanges served858-200-xxxx, 858-201-xxxx, 858-202-xxxx, 858-204-xxxx, 858-205-xxxx, 858-206-xxxx, 858-207-xxxx, 858-208-xxxx, 858-210-xxxx, 858-212-xxxx, 858-213-xxxx, 858-215-xxxx, 858-216-xxxx, 858-217-xxxx, 858-218-xxxx, 858-219-xxxx, 858-220-xxxx, 858-222-xxxx, 858-225-xxxx, 858-227-xxxx, 858-228-xxxx, 858-229-xxxx, 858-231-xxxx, 858-232-xxxx, 858-233-xxxx, 858-234-xxxx, 858-235-xxxx, 858-236-xxxx, 858-237-xxxx, 858-240-xxxx, 858-243-xxxx, 858-244-xxxx, 858-245-xxxx, 858-246-xxxx, 858-248-xxxx, 858-254-xxxx, 858-259-xxxx, 858-268-xxxx, 858-270-xxxx, 858-271-xxxx, 858-272-xxxx, 858-273-xxxx, 858-274-xxxx, 858-277-xxxx, 858-278-xxxx, 858-279-xxxx, 858-292-xxxx, 858-297-xxxx, 858-300-xxxx, 858-304-xxxx, 858-309-xxxx, 858-312-xxxx, 858-314-xxxx, 858-320-xxxx, 858-324-xxxx, 858-332-xxxx, 858-334-xxxx, 858-335-xxxx, 858-336-xxxx, 858-337-xxxx, 858-342-xxxx, 858-344-xxxx, 858-345-xxxx, 858-346-xxxx, 858-347-xxxx, 858-348-xxxx, 858-349-xxxx, 858-350-xxxx, 858-352-xxxx, 858-353-xxxx, 858-354-xxxx, 858-356-xxxx, 858-357-xxxx, 858-359-xxxx, 858-360-xxxx, 858-361-xxxx, 858-362-xxxx, 858-364-xxxx, 858-365-xxxx, 858-366-xxxx, 858-367-xxxx, 858-368-xxxx, 858-369-xxxx, 858-371-xxxx, 858-373-xxxx, 858-375-xxxx, 858-376-xxxx, 858-380-xxxx, 858-381-xxxx, 858-382-xxxx, 858-384-xxxx, 858-385-xxxx, 858-386-xxxx, 858-391-xxxx, 858-395-xxxx, 858-397-xxxx, 858-400-xxxx, 858-401-xxxx, 858-404-xxxx, 858-405-xxxx, 858-408-xxxx, 858-410-xxxx, 858-412-xxxx, 858-413-xxxx, 858-414-xxxx, 858-427-xxxx, 858-428-xxxx, 858-429-xxxx, 858-430-xxxx, 858-431-xxxx, 858-432-xxxx, 858-433-xxxx, 858-434-xxxx, 858-435-xxxx, 858-436-xxxx, 858-437-xxxx, 858-440-xxxx, 858-442-xxxx, 858-444-xxxx, 858-449-xxxx, 858-450-xxxx, 858-451-xxxx, 858-452-xxxx, 858-453-xxxx, 858-454-xxxx, 858-455-xxxx, 858-456-xxxx, 858-457-xxxx, 858-458-xxxx, 858-459-xxxx, 858-461-xxxx, 858-467-xxxx, 858-472-xxxx, 858-480-xxxx, 858-481-xxxx, 858-483-xxxx, 858-484-xxxx, 858-485-xxxx, 858-486-xxxx, 858-487-xxxx, 858-488-xxxx, 858-490-xxxx, 858-492-xxxx, 858-493-xxxx, 858-494-xxxx, 858-495-xxxx, 858-496-xxxx, 858-499-xxxx, 858-502-xxxx, 858-503-xxxx, 858-504-xxxx, 858-505-xxxx, 858-509-xxxx, 858-513-xxxx, 858-514-xxxx, 858-518-xxxx, 858-519-xxxx, 858-521-xxxx, 858-522-xxxx, 858-523-xxxx, 858-524-xxxx, 858-525-xxxx, 858-526-xxxx, 858-527-xxxx, 858-530-xxxx, 858-531-xxxx, 858-534-xxxx, 858-535-xxxx, 858-536-xxxx, 858-537-xxxx, 858-538-xxxx, 858-539-xxxx, 858-541-xxxx, 858-546-xxxx, 858-547-xxxx, 858-549-xxxx, 858-550-xxxx, 858-551-xxxx, 858-552-xxxx, 858-554-xxxx, 858-555-xxxx, 858-558-xxxx, 858-560-xxxx, 858-564-xxxx, 858-565-xxxx, 858-566-xxxx, 858-568-xxxx, 858-569-xxxx, 858-570-xxxx, 858-571-xxxx, 858-573-xxxx, 858-576-xxxx, 858-577-xxxx, 858-578-xxxx, 858-581-xxxx, 858-583-xxxx, 858-586-xxxx, 858-587-xxxx, 858-592-xxxx, 858-597-xxxx, 858-598-xxxx, 858-600-xxxx, 858-602-xxxx, 858-603-xxxx, 858-605-xxxx, 858-609-xxxx, 858-610-xxxx, 858-613-xxxx, 858-614-xxxx, 858-616-xxxx, 858-617-xxxx, 858-618-xxxx, 858-621-xxxx, 858-622-xxxx, 858-623-xxxx, 858-625-xxxx, 858-626-xxxx, 858-627-xxxx, 858-630-xxxx, 858-633-xxxx, 858-634-xxxx, 858-635-xxxx, 858-636-xxxx, 858-637-xxxx, 858-638-xxxx, 858-642-xxxx, 858-643-xxxx, 858-646-xxxx, 858-649-xxxx, 858-650-xxxx, 858-651-xxxx, 858-652-xxxx, 858-653-xxxx, 858-654-xxxx, 858-655-xxxx, 858-657-xxxx, 858-658-xxxx, 858-663-xxxx, 858-668-xxxx, 858-672-xxxx, 858-673-xxxx, 858-674-xxxx, 858-675-xxxx, 858-676-xxxx, 858-677-xxxx, 858-678-xxxx, 858-679-xxxx, 858-682-xxxx, 858-683-xxxx, 858-684-xxxx, 858-688-xxxx, 858-689-xxxx, 858-692-xxxx, 858-693-xxxx, 858-694-xxxx, 858-695-xxxx, 858-699-xxxx, 858-703-xxxx, 858-704-xxxx, 858-705-xxxx, 858-707-xxxx, 858-712-xxxx, 858-713-xxxx, 858-715-xxxx, 858-716-xxxx, 858-717-xxxx, 858-720-xxxx, 858-722-xxxx, 858-724-xxxx, 858-726-xxxx, 858-728-xxxx, 858-729-xxxx, 858-731-xxxx, 858-733-xxxx, 858-735-xxxx, 858-736-xxxx, 858-737-xxxx, 858-740-xxxx, 858-746-xxxx, 858-748-xxxx, 858-750-xxxx, 858-751-xxxx, 858-752-xxxx, 858-753-xxxx, 858-754-xxxx, 858-755-xxxx, 858-756-xxxx, 858-759-xxxx, 858-761-xxxx, 858-762-xxxx, 858-763-xxxx, 858-764-xxxx, 858-768-xxxx, 858-769-xxxx, 858-771-xxxx, 858-772-xxxx, 858-774-xxxx, 858-775-xxxx, 858-776-xxxx, 858-777-xxxx, 858-779-xxxx, 858-780-xxxx, 858-784-xxxx, 858-790-xxxx, 858-792-xxxx, 858-793-xxxx, 858-794-xxxx, 858-795-xxxx, 858-798-xxxx, 858-799-xxxx, 858-805-xxxx, 858-810-xxxx, 858-812-xxxx, 858-815-xxxx, 858-822-xxxx, 858-824-xxxx, 858-826-xxxx, 858-829-xxxx, 858-831-xxxx, 858-832-xxxx, 858-834-xxxx, 858-836-xxxx, 858-837-xxxx, 858-842-xxxx, 858-845-xxxx, 858-847-xxxx, 858-848-xxxx, 858-853-xxxx, 858-856-xxxx, 858-859-xxxx, 858-860-xxxx, 858-863-xxxx, 858-864-xxxx, 858-866-xxxx, 858-869-xxxx, 858-874-xxxx, 858-875-xxxx, 858-876-xxxx, 858-877-xxxx, 858-879-xxxx, 858-880-xxxx, 858-882-xxxx, 858-883-xxxx, 858-886-xxxx, 858-901-xxxx, 858-905-xxxx, 858-909-xxxx, 858-914-xxxx, 858-922-xxxx, 858-923-xxxx, 858-924-xxxx, 858-925-xxxx, 858-926-xxxx, 858-927-xxxx, 858-935-xxxx, 858-939-xxxx, 858-942-xxxx, 858-943-xxxx, 858-945-xxxx, 858-946-xxxx, 858-947-xxxx, 858-949-xxxx, 858-951-xxxx, 858-952-xxxx, 858-956-xxxx, 858-964-xxxx, 858-966-xxxx, 858-967-xxxx, 858-974-xxxx, 858-997-xxxx
Number of telephone companies33 telephone companies servicing the 858 area code
List of telephone companiesU.S. TELEPACIFIC CORP. - CA, NEW CINGULAR WIRELESS PCS, LLC, MCI WORLDCOM COMMUNICATIONS, INC., CA, LEVEL 3 COMMUNICATIONS, LLC - CA, NEXTEL COMMUNICATIONS, INC., T-MOBILE USA, INC., PACIFIC BELL, CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA, YMAX COMMUNICATIONS CORP. - CA, TELEPORT COMMUNICATIONS GROUP - SAN DIEGO, O1 COMMUNICATIONS, INC. - CA, XO CALIFORNIA, INC., SPRINT SPECTRUM L.P., NETWORK SERVICES LLC, TW TELECOM OF CALIFORNIA LP - CA, LEAP WIRELESS INTL, INC. DBA CRICKET COMM, INC., PAC - WEST TELECOMM, INC., NORTH COUNTY COMMUNICATIONS CORP. - CA, AT&T LOCAL, COX CALIFORNIA TELCOM, INC. - CA, PAETEC COMMUNICATIONS, INC. - CA, GLOBAL CROSSING LOCAL SERVICES, INC.-CA, USA MOBILITY WIRELESS, INC., MCIMETRO ACCESS TRANSMISSION SERVICES LLC, MPOWER COMMUNICATIONS CORP - CA, COOK TELECOM, INC., ALLEGIANCE TELECOM, INC. - CA, TELCENTRIS COMMUNICATIONS, LLC - CA, SPRINT COMMUNICATIONS COMPANY, L.P. - CA, AMERICAN MESSAGING (AM), INC., SBC INTERNET SERVICES, INC., NETWORK SERVICES LLC (TSR), COST PLUS COMMUNICATIONS, LLC - CA

858 Area Code Map

 
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