Area Code 248-391 located in CLARKSTON, OAKLAND, MI, more detail is as below. Place NPA (Numbering Plan Area) : 248 NXX (Local Number Prefix) : 391 City : CLARKSTON County : OAKLAND State : MI (Michigan) NXX Use Type : Landline NXX Intro Version : 1997-07-06 FIPS (Federal Information Processing Standards) : 26125 LATA (Local Access Transport Area) : 340 Rate Center : PONTIAC ZIP Code Count : 457 ZIP Code Frequency : 13 ZIP Code : 48348 Other Information NPANXX : 248391 County Population : 0 Switch CLLI (Common Language Location Identifier) : PNTCMINRRSA 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 : PONTIAC Latitude : 42.7364 Longitude : -83.3076 ‹ previous : 248-391 next › : 248-391 Telephone Number List 248-391-0000 ~ 248-391-9999