Area Code 234-303 located in SUMMIT, SUMMIT, OH, more detail is as below. Place NPA (Numbering Plan Area) : 234 NXX (Local Number Prefix) : 303 City : SUMMIT County : SUMMIT State : OH (Ohio) NXX Intro Version : 7/10/2013 Rate Center : AKRON ZIP Code Count : 0 ZIP Code Frequency : 0 Other Information NPANXX : 234303 County Population : 0 Time Zone : Eastern (GMT -05:00) Observes Daylight Saving Time : Yes Company : T-MOBILE USA, INC. OCN (Operating Company Number) : 6529 Latitude : None Longitude : None ‹ previous : 234-302 next › : 234-305 Telephone Number List 234-303-0000 ~ 234-303-9999