Area Code 408-690 located in ANTIOCH, CONTRA COSTA, CA, more detail is as below. Place NPA (Numbering Plan Area) : 408 NXX (Local Number Prefix) : 690 City : ANTIOCH County : CONTRA COSTA State : CA (California) NXX Use Type : Wireless NXX Intro Version : 1998-05-18 FIPS (Federal Information Processing Standards) : 06013 LATA (Local Access Transport Area) : 722 Rate Center : SNJS WEST ZIP Code Count : 1 ZIP Code Frequency : 33 ZIP Code : 94531 Other Information NPANXX : 408690 Switch CLLI (Common Language Location Identifier) : SNTCCATZCM1 MSA CBSA (Core Based Statistical Area) : San Francisco-Oakland-Fremont, CA MSA CBSA Code (Core Based Statistical Area) : 41860 Time Zone : Pacific (GMT -08:00) Observes Daylight Saving Time : Yes Company : SPRINT SPECTRUM L.P. OCN (Operating Company Number) : 6664 Coverage Area Name : SAN JOSE Latitude : 37.3323 Longitude : -121.8893 ‹ previous : 408-690 next › : 408-691 Telephone Number List 408-690-0000 ~ 408-690-9999