Area Code 510-217 located in ALAMEDA, ALAMEDA, CA, more detail is as below. Place NPA (Numbering Plan Area) : 510 NXX (Local Number Prefix) : 217 City : ALAMEDA County : ALAMEDA State : CA (California) NXX Use Type : Landline NXX Intro Version : 1996-04-15 FIPS (Federal Information Processing Standards) : 06001 LATA (Local Access Transport Area) : 722 Rate Center : OKLD ALMD ZIP Code Count : 1 ZIP Code Frequency : 50 ZIP Code : 94501 Other Information NPANXX : 510217 Switch CLLI (Common Language Location Identifier) : SNFCCAFJDS0 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 : TELEPORT COMMUNICATIONS GROUP - SAN FRANCISCO OCN (Operating Company Number) : 7145 Coverage Area Name : SAN FRANCISCO Latitude : 37.7894 Longitude : -122.3999 ‹ previous : 510-217 next › : 510-218 Telephone Number List 510-217-0000 ~ 510-217-9999