Area Code 231-428 located in HART, OCEANA, MI, more detail is as below. Place NPA (Numbering Plan Area) : 231 NXX (Local Number Prefix) : 428 City : HART County : OCEANA State : MI (Michigan) NXX Use Type : Landline NXX Intro Version : 2000-08-20 FIPS (Federal Information Processing Standards) : 26127 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 : 231428 County Population : 0 Switch CLLI (Common Language Location Identifier) : GDRPMIBHCM0 Time Zone : Eastern (GMT -05:00) Observes Daylight Saving Time : Yes Latitude : None Longitude : None ‹ previous : 231-427 next › : 231-429 Telephone Number List 231-428-0000 ~ 231-428-9999
