Area Code 231-351 located in SCOTTVILLE, MASON, MI, more detail is as below. Place NPA (Numbering Plan Area) : 231 NXX (Local Number Prefix) : 351 City : SCOTTVILLE County : MASON State : MI (Michigan) NXX Use Type : Landline NXX Intro Version : 2001-03-03 FIPS (Federal Information Processing Standards) : 26105 LATA (Local Access Transport Area) : 348 Rate Center : SCOTTVILLE ZIP Code Count : 0 ZIP Code Frequency : Most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 49454 Other Information NPANXX : 231351 County Population : 0 Switch CLLI (Common Language Location Identifier) : GDRQMIFOCA0 Time Zone : Eastern (GMT -05:00) Observes Daylight Saving Time : Yes Company : TELNET WORLDWIDE, INC. OCN (Operating Company Number) : 4632 Coverage Area Name : SCOTTVILLE Latitude : 43.9512 Longitude : -86.2870 ‹ previous : 231-350 next › : 231-352 Telephone Number List 231-351-0000 ~ 231-351-9999