Area Code 858-204 located in RANCHO SANTA FE, SAN DIEGO, CA, more detail is as below. Place NPA (Numbering Plan Area) : 858 NXX (Local Number Prefix) : 204 City : RANCHO SANTA FE County : SAN DIEGO State : CA (California) NXX Use Type : Wireless NXX Intro Version : 2001-06-30 FIPS (Federal Information Processing Standards) : 06073 LATA (Local Access Transport Area) : 732 Rate Center : POWAY ZIP Code Count : 1 ZIP Code Frequency : 100 ZIP Code : 92091 Other Information NPANXX : 858204 Switch CLLI (Common Language Location Identifier) : SNDKCAYCCM0 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 : CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA OCN (Operating Company Number) : 6006 Coverage Area Name : SAN DIEGO Latitude : 32.9558 Longitude : -117.0245 ‹ previous : 858-202 next › : 858-205 Telephone Number List 858-204-0000 ~ 858-204-9999