Area Code 989-603 located in ALPENA, ALPENA, MI, more detail is as below. Place NPA (Numbering Plan Area) : 989 NXX (Local Number Prefix) : 603 City : ALPENA County : ALPENA State : MI (Michigan) NXX Use Type : Wireless NXX Intro Version : 2001-06-30 FIPS (Federal Information Processing Standards) : 26007 LATA (Local Access Transport Area) : 344 Rate Center : ALPENA ZIP Code Count : 0 ZIP Code Frequency : Most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 49707 Other Information NPANXX : 989603 Switch CLLI (Common Language Location Identifier) : SGNWMIATQMD MSA CBSA (Core Based Statistical Area) : Alpena, MI MSA CBSA Code (Core Based Statistical Area) : 10980 Time Zone : Eastern (GMT -05:00) Observes Daylight Saving Time : Yes Company : AMERICAN MESSAGING (AM), INC. OCN (Operating Company Number) : 9748 Coverage Area Name : ALPENA Latitude : 45.0606 Longitude : -83.4451 ‹ previous : 989-601 next › : 989-604 Telephone Number List 989-603-0000 ~ 989-603-9999