Area Code 231-350 located in BELLAIRE, ANTRIM, MI, more detail is as below. Place NPA (Numbering Plan Area) : 231 NXX (Local Number Prefix) : 350 City : BELLAIRE County : ANTRIM State : MI (Michigan) NXX Use Type : Wireless NXX Intro Version : 2003-11-11 FIPS (Federal Information Processing Standards) : 26009 LATA (Local Access Transport Area) : 348 Rate Center : BELLAIRE ZIP Code Count : 0 ZIP Code Frequency : Most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 49615 Other Information NPANXX : 231350 County Population : 0 Switch CLLI (Common Language Location Identifier) : TRCYMICQCM0 Time Zone : Eastern (GMT -05:00) Observes Daylight Saving Time : Yes Company : CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI OCN (Operating Company Number) : 6003 Coverage Area Name : BELLAIRE Latitude : 44.9738 Longitude : -85.2117 ‹ previous : 231-349 next › : 231-351 Telephone Number List 231-350-0000 ~ 231-350-9999