Area Code 510-999 located in OAKLAND, ALAMEDA, CA, more detail is as below. Place NPA (Numbering Plan Area) : 510 NXX (Local Number Prefix) : 999 City : OAKLAND County : ALAMEDA State : CA (California) NXX Use Type : Landline NXX Intro Version : 1999-07-22 FIPS (Federal Information Processing Standards) : 06001 LATA (Local Access Transport Area) : 722 Rate Center : OKLD MN-PD ZIP Code Count : 0 ZIP Code Frequency : Most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 94612 Other Information NPANXX : 510999 Switch CLLI (Common Language Location Identifier) : OKLDCA0349T 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 : CF COMMUNICATIONS, LLC DBA TELEKENEX - CA OCN (Operating Company Number) : 8886 Coverage Area Name : HAYWARD Latitude : 37.6682 Longitude : -122.0796 ‹ previous : 510-999 next › : 512-200 Telephone Number List 510-999-0000 ~ 510-999-9999