Area Code 517-999 located in LANSING, INGHAM, MI, more detail is as below. Place NPA (Numbering Plan Area) : 517 NXX (Local Number Prefix) : 999 City : LANSING County : INGHAM State : MI (Michigan) NXX Use Type : Landline NXX Intro Version : 2000-10-31 FIPS (Federal Information Processing Standards) : 26065 LATA (Local Access Transport Area) : 346 Rate Center : LANSING ZIP Code Count : 0 ZIP Code Frequency : Most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 48924 Other Information NPANXX : 517999 County Population : 0 Switch CLLI (Common Language Location Identifier) : MDTPMICODS0 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 : ACD TELECOM, INC. - MI OCN (Operating Company Number) : 3535 Coverage Area Name : LANSING Latitude : 42.7332 Longitude : -84.5552 ‹ previous : 517-999 next › : 518-200 Telephone Number List 517-999-0000 ~ 517-999-9999