Area Code 231-538 located in FREMONT, NEWAYGO, MI, more detail is as below. Place NPA (Numbering Plan Area) : 231 NXX (Local Number Prefix) : 538 City : FREMONT County : NEWAYGO State : MI (Michigan) NXX Use Type : Landline NXX Intro Version : 2003-02-09 FIPS (Federal Information Processing Standards) : 26123 LATA (Local Access Transport Area) : 348 Rate Center : FREMONT ZIP Code Count : 0 ZIP Code Frequency : Most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 49412 Other Information NPANXX : 231538 County Population : 0 Switch CLLI (Common Language Location Identifier) : GDRPMIBLX8Z MSA CBSA (Core Based Statistical Area) : Grand Rapids-Wyoming, MI MSA CBSA Code (Core Based Statistical Area) : 24340 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 : FREMONT Latitude : 43.4678 Longitude : -85.9426 ‹ previous : 231-537 next › : 231-539 Telephone Number List 231-538-0000 ~ 231-538-9999