Area Code 989-310 located in EAST TAWAS, IOSCO, MI, more detail is as below. Place NPA (Numbering Plan Area) : 989 NXX (Local Number Prefix) : 310 City : EAST TAWAS County : IOSCO State : MI (Michigan) NXX Use Type : Wireless NXX Intro Version : 2001-06-30 FIPS (Federal Information Processing Standards) : 26069 LATA (Local Access Transport Area) : 344 Rate Center : EAST TAWAS ZIP Code Count : 0 ZIP Code Frequency : Most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 48730 Other Information NPANXX : 989310 Switch CLLI (Common Language Location Identifier) : SGNWMIFAX4X Time Zone : Eastern (GMT -05:00) Observes Daylight Saving Time : Yes Company : NEW CINGULAR WIRELESS PCS, LLC - IL OCN (Operating Company Number) : 6534 Coverage Area Name : EAST TAWAS Latitude : 44.2854 Longitude : -83.4942 ‹ previous : 989-309 next › : 989-312 Telephone Number List 989-310-0000 ~ 989-310-9999