Area Code 330-739 located in AMSTERDAM, JEFFERSON, OH, more detail is as below. Place NPA (Numbering Plan Area) : 330 NXX (Local Number Prefix) : 739 City : AMSTERDAM County : JEFFERSON State : OH (Ohio) NXX Use Type : Landline NXX Intro Version : 1996-04-15 FIPS (Federal Information Processing Standards) : 39081 LATA (Local Access Transport Area) : 325 Rate Center : HARLEM SPG ZIP Code Count : 123 ZIP Code Frequency : 27 ZIP Code : 43903 Other Information NPANXX : 330739 County Population : 0 Switch CLLI (Common Language Location Identifier) : HRSPOHXARS0 MSA CBSA (Core Based Statistical Area) : Steubenville-Weirton, OH-WV MSA CBSA Code (Core Based Statistical Area) : 44600 Time Zone : Eastern (GMT -05:00) Observes Daylight Saving Time : Yes Company : FRONTIER NORTH, INC. - OH OCN (Operating Company Number) : 0615 Coverage Area Name : AMSTERDAM Latitude : 40.5223 Longitude : -81.0052 ‹ previous : 330-738 next › : 330-739 Telephone Number List 330-739-0000 ~ 330-739-9999