Area Code 231-721 located in HART, OCEANA, MI, more detail is as below. Place NPA (Numbering Plan Area) : 231 NXX (Local Number Prefix) : 721 City : HART County : OCEANA State : MI (Michigan) NXX Use Type : Landline NXX Intro Version : 2003-02-09 FIPS (Federal Information Processing Standards) : 26127 LATA (Local Access Transport Area) : 348 Rate Center : HART ZIP Code Count : 0 ZIP Code Frequency : Most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 49420 Other Information NPANXX : 231721 County Population : 0 Switch CLLI (Common Language Location Identifier) : GDRPMIBLX8Z Time Zone : Eastern (GMT -05:00) Observes Daylight Saving Time : Yes Company : LOCAL EXCHANGE CARRIERS OF MICHIGAN, INC. - MI OCN (Operating Company Number) : 2550 Coverage Area Name : HART Latitude : 43.6999 Longitude : -86.3711 ‹ previous : 231-720 next › : 231-722 Telephone Number List 231-721-0000 ~ 231-721-9999
