Area Code 657-206 located in GARDEN GROVE, ORANGE, CA, more detail is as below. Place NPA (Numbering Plan Area) : 657 NXX (Local Number Prefix) : 206 City : GARDEN GROVE County : ORANGE State : CA (California) NXX Use Type : Wireless NXX Intro Version : 5/18/2010 FIPS (Federal Information Processing Standards) : 06059 LATA (Local Access Transport Area) : 730 Rate Center : GARDEN GRV ZIP Code Count : 0 ZIP Code Frequency : 0 ZIP Code : 92840 Other Information NPANXX : 657206 MSA CBSA (Core Based Statistical Area) : Los Angeles-Long Beach-Santa Ana, CA MSA CBSA Code (Core Based Statistical Area) : 31100 Time Zone : Pacific (GMT -08:00) Observes Daylight Saving Time : Yes Overlay : L Company : T-MOBILE USA, INC. OCN (Operating Company Number) : 6529 Coverage Area Name : GARDEN GROVE Latitude : 33.7728 Longitude : -117.9379 ‹ previous : 657-205 next › : 657-207 Telephone Number List 657-206-0000 ~ 657-206-9999