Area Code 989-257 located in SOUTH BRANCH, OGEMAW, MI, more detail is as below. Place NPA (Numbering Plan Area) : 989 NXX (Local Number Prefix) : 257 City : SOUTH BRANCH County : OGEMAW State : MI (Michigan) NXX Use Type : Landline NXX Intro Version : 2001-06-30 FIPS (Federal Information Processing Standards) : 26129 LATA (Local Access Transport Area) : 344 Rate Center : SIXTYLAKES ZIP Code Count : 589 ZIP Code Frequency : 35 ZIP Code : 48761 Other Information NPANXX : 989257 Switch CLLI (Common Language Location Identifier) : SXLSMIXIRS0 Time Zone : Eastern (GMT -05:00) Observes Daylight Saving Time : Yes Company : CENTURYTEL OF MICHIGAN INC DBA CENTURYLINK OCN (Operating Company Number) : 0702 Coverage Area Name : LONG LAKE Latitude : 44.4230 Longitude : -83.8779 ‹ previous : 989-255 next › : 989-257 Telephone Number List 989-257-0000 ~ 989-257-9999