Area Code 248-257 located in CLARKSTON, OAKLAND, MI, more detail is as below. Place NPA (Numbering Plan Area) : 248 NXX (Local Number Prefix) : 257 City : CLARKSTON County : OAKLAND State : MI (Michigan) NXX Use Type : Landline NXX Intro Version : 1999-05-10 FIPS (Federal Information Processing Standards) : 26125 LATA (Local Access Transport Area) : 340 Rate Center : DRAYTON PL ZIP Code Count : 0 ZIP Code Frequency : Second most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 48346 Other Information NPANXX : 248257 County Population : 0 Switch CLLI (Common Language Location Identifier) : SFLDMIOL1MD MSA CBSA (Core Based Statistical Area) : Detroit-Warren-Livonia, MI MSA CBSA Code (Core Based Statistical Area) : 19820 Time Zone : Eastern (GMT -05:00) Observes Daylight Saving Time : Yes Company : GLOBAL CROSSING TELEMANAGEMENT, INC.-MI OCN (Operating Company Number) : 4044 Coverage Area Name : WATERFORD Latitude : 42.6843 Longitude : -83.3719 ‹ previous : 248-256 next › : 248-257 Telephone Number List 248-257-0000 ~ 248-257-9999