Area Code 234-204 located in OH, more detail is as below. Place NPA (Numbering Plan Area) : 234 NXX (Local Number Prefix) : 204 State : OH (Ohio) NXX Intro Version : 7/1/2013 Rate Center : HOLMESVL ZIP Code Count : 0 ZIP Code Frequency : 0 Other Information NPANXX : 234204 County Population : 0 Time Zone : Eastern (GMT -05:00) Company : TIME WARNER CABLE INFORMATION SVCS (OHIO) - OH OCN (Operating Company Number) : 547D Latitude : None Longitude : None ‹ previous : 234-203 next › : 234-205 Telephone Number List 234-204-0000 ~ 234-204-9999