Area Code 989-234 located in CARSON CITY, MONTCALM, MI, more detail is as below. Place NPA (Numbering Plan Area) : 989 NXX (Local Number Prefix) : 234 City : CARSON CITY County : MONTCALM State : MI (Michigan) NXX Use Type : Landline NXX Intro Version : 2004-08-17 FIPS (Federal Information Processing Standards) : 26117 LATA (Local Access Transport Area) : 344 Rate Center : VICKERYVL ZIP Code Count : 0 ZIP Code Frequency : Most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 48811 Other Information NPANXX : 989234 Switch CLLI (Common Language Location Identifier) : SGNWMIACCA0 Time Zone : Eastern (GMT -05:00) Observes Daylight Saving Time : Yes Company : TELNET WORLDWIDE, INC. OCN (Operating Company Number) : 4632 Coverage Area Name : SHERIDAN Latitude : 43.1903 Longitude : -84.9669 ‹ previous : 989-234 next › : 989-235 Telephone Number List 989-234-0000 ~ 989-234-9999