Area Code 248-457 located in TROY, OAKLAND, MI, more detail is as below. Place NPA (Numbering Plan Area) : 248 NXX (Local Number Prefix) : 457 City : TROY County : OAKLAND State : MI (Michigan) NXX Use Type : Landline NXX Intro Version : 1999-10-13 FIPS (Federal Information Processing Standards) : 26125 LATA (Local Access Transport Area) : 340 Rate Center : TROY ZIP Code Count : 6 ZIP Code Frequency : 6 ZIP Code : 48085 Other Information NPANXX : 248457 County Population : 0 Switch CLLI (Common Language Location Identifier) : TROYMIMNDS0 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 : AMERITECH MICHIGAN OCN (Operating Company Number) : 9323 Coverage Area Name : TROY Latitude : 42.5473 Longitude : -83.1357 ‹ previous : 248-457 next › : 248-457 Telephone Number List 248-457-0000 ~ 248-457-9999