Area Code 517-403 located in ANN ARBOR, WASHTENAW, MI, more detail is as below. Place NPA (Numbering Plan Area) : 517 NXX (Local Number Prefix) : 403 City : ANN ARBOR County : WASHTENAW State : MI (Michigan) NXX Use Type : Wireless NXX Intro Version : 1999-05-10 FIPS (Federal Information Processing Standards) : 26161 LATA (Local Access Transport Area) : 340 Rate Center : ADRIAN ZIP Code Count : 1 ZIP Code Frequency : 50 ZIP Code : 48104 Other Information NPANXX : 517403 County Population : 0 Switch CLLI (Common Language Location Identifier) : WSLDMI05CM1 MSA CBSA (Core Based Statistical Area) : Ann Arbor, MI MSA CBSA Code (Core Based Statistical Area) : 11460 Time Zone : Eastern (GMT -05:00) Observes Daylight Saving Time : Yes Company : SPRINT SPECTRUM L.P. OCN (Operating Company Number) : 6664 Coverage Area Name : ADRIAN Latitude : 41.8938 Longitude : -84.0351 ‹ previous : 517-403 next › : 517-404 Telephone Number List 517-403-0000 ~ 517-403-9999