Area Code 517-277 located in DEWITT, CLINTON, MI, more detail is as below. Place NPA (Numbering Plan Area) : 517 NXX (Local Number Prefix) : 277 City : DEWITT County : CLINTON State : MI (Michigan) NXX Use Type : Landline NXX Intro Version : 2005-03-27 FIPS (Federal Information Processing Standards) : 26037 LATA (Local Access Transport Area) : 346 Rate Center : DE WITT ZIP Code Count : 0 ZIP Code Frequency : Most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 48820 Other Information NPANXX : 517277 County Population : 0 Switch CLLI (Common Language Location Identifier) : LNNHMIQDRS1 MSA CBSA (Core Based Statistical Area) : Lansing-East Lansing, MI MSA CBSA Code (Core Based Statistical Area) : 29620 Time Zone : Eastern (GMT -05:00) Observes Daylight Saving Time : Yes Company : WESTPHALIA BROADBAND, INC. - MI OCN (Operating Company Number) : 591C Coverage Area Name : DEWITT Latitude : 42.8412 Longitude : -84.5707 ‹ previous : 517-272 next › : 517-278 Telephone Number List 517-277-0000 ~ 517-277-9999