Area Code 248-400 located in MILFORD, OAKLAND, MI, more detail is as below. Place NPA (Numbering Plan Area) : 248 NXX (Local Number Prefix) : 400 City : MILFORD County : OAKLAND State : MI (Michigan) NXX Use Type : Wireless NXX Intro Version : 1997-10-11 FIPS (Federal Information Processing Standards) : 26125 LATA (Local Access Transport Area) : 340 Rate Center : SOUTHFIELD ZIP Code Count : 1 ZIP Code Frequency : 100 ZIP Code : 48381 Other Information NPANXX : 248400 County Population : 0 Switch CLLI (Common Language Location Identifier) : CMPTMIIFCM0 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 : AMERICAN MESSAGING (AM), INC. OCN (Operating Company Number) : 9748 Coverage Area Name : SOUTHFIELD Latitude : 42.4841 Longitude : -83.2597 ‹ previous : 248-399 next › : 248-401 Telephone Number List 248-400-0000 ~ 248-400-9999