Area Code 510-287 located in ALAMEDA, ALAMEDA, CA, more detail is as below. Place NPA (Numbering Plan Area) : 510 NXX (Local Number Prefix) : 287 City : ALAMEDA County : ALAMEDA State : CA (California) NXX Use Type : Landline NXX Intro Version : 1994-02-04 FIPS (Federal Information Processing Standards) : 06001 LATA (Local Access Transport Area) : 722 Rate Center : OKLD MN-PD ZIP Code Count : 1 ZIP Code Frequency : 2 ZIP Code : 94501 Other Information NPANXX : 510287 Switch CLLI (Common Language Location Identifier) : OKLDCA03DS2 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 : PACIFIC BELL OCN (Operating Company Number) : 9740 Coverage Area Name : OAKLAND Latitude : 37.8067 Longitude : -122.2695 ‹ previous : 510-287 next › : 510-287 Telephone Number List 510-287-0000 ~ 510-287-9999