Area Code 231-241 located in PENTWATER, OCEANA, MI, more detail is as below. Place NPA (Numbering Plan Area) : 231 NXX (Local Number Prefix) : 241 City : PENTWATER County : OCEANA State : MI (Michigan) NXX Use Type : Landline NXX Intro Version : 10/10/2006 FIPS (Federal Information Processing Standards) : 26127 LATA (Local Access Transport Area) : 348 Rate Center : PENTWATER ZIP Code Count : 0 ZIP Code Frequency : Most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 49449 Other Information NPANXX : 231241 County Population : 0 Switch CLLI (Common Language Location Identifier) : MSKGMIXKFMD Time Zone : Eastern (GMT -05:00) Observes Daylight Saving Time : Yes Company : DAYSTARR, LLC DBA DAYSTARR COMMUNICATIONS - MI OCN (Operating Company Number) : 691A Coverage Area Name : PENTWATER Latitude : 43.7839 Longitude : -86.4225 ‹ previous : 231-240 next › : 231-242 Telephone Number List 231-241-0000 ~ 231-241-9999