Area Code 248-523 located in FARMINGTON, OAKLAND, MI, more detail is as below. Place NPA (Numbering Plan Area) : 248 NXX (Local Number Prefix) : 523 City : FARMINGTON County : OAKLAND State : MI (Michigan) NXX Use Type : Wireless NXX Intro Version : 1998-01-25 FIPS (Federal Information Processing Standards) : 26125 LATA (Local Access Transport Area) : 340 Rate Center : FARMINGTON ZIP Code Count : 0 ZIP Code Frequency : Second most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 48334 Other Information NPANXX : 248523 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 : FARMINGTON Latitude : 42.4658 Longitude : -83.3758 ‹ previous : 248-522 next › : 248-523 Telephone Number List 248-523-0000 ~ 248-523-9999