Area Code 234-220 located in WARREN, TRUMBULL, OH, more detail is as below. Place NPA (Numbering Plan Area) : 234 NXX (Local Number Prefix) : 220 City : WARREN County : TRUMBULL State : OH (Ohio) NXX Use Type : Landline NXX Intro Version : 4/29/2010 FIPS (Federal Information Processing Standards) : 39155 LATA (Local Access Transport Area) : 322 Rate Center : CORTLAND ZIP Code Count : 0 ZIP Code Frequency : 0 ZIP Code : 44483 Other Information NPANXX : 234220 County Population : 0 MSA CBSA (Core Based Statistical Area) : Youngstown-Warren-Boardman, OH-PA MSA CBSA Code (Core Based Statistical Area) : 49660 Time Zone : Eastern (GMT -05:00) Observes Daylight Saving Time : Yes Overlay : L Company : TELEPORT COMMUNICATIONS AMERICA, LLC - OH OCN (Operating Company Number) : 7532 Coverage Area Name : WARREN Latitude : 41.2324 Longitude : -80.8177 ‹ previous : 234-218 next › : 234-221 Telephone Number List 234-220-0000 ~ 234-220-9999