Area Code 858-200 located in LA JOLLA, SAN DIEGO, CA, more detail is as below. Place NPA (Numbering Plan Area) : 858 NXX (Local Number Prefix) : 200 City : LA JOLLA County : SAN DIEGO State : CA (California) NXX Use Type : Landline NXX Intro Version : 1999-07-22 FIPS (Federal Information Processing Standards) : 06073 LATA (Local Access Transport Area) : 732 Rate Center : LA JOLLA ZIP Code Count : 0 ZIP Code Frequency : Most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 92037 Other Information NPANXX : 858200 Switch CLLI (Common Language Location Identifier) : SNDKCA88DS0 MSA CBSA (Core Based Statistical Area) : San Diego-Carlsbad-San Marcos, CA MSA CBSA Code (Core Based Statistical Area) : 41740 Time Zone : Pacific (GMT -08:00) Observes Daylight Saving Time : Yes Company : U.S. TELEPACIFIC CORP. - CA OCN (Operating Company Number) : 7453 Coverage Area Name : LA JOLLA Latitude : 32.8897 Longitude : -117.1821 ‹ previous : 858-200 next › : 858-201 Telephone Number List 858-200-0000 ~ 858-200-9999