Area Code 234-421 located in GIRARD, TRUMBULL, OH, more detail is as below. Place NPA (Numbering Plan Area) : 234 NXX (Local Number Prefix) : 421 City : GIRARD County : TRUMBULL State : OH (Ohio) NXX Use Type : Landline NXX Intro Version : 2004-12-13 FIPS (Federal Information Processing Standards) : 39155 LATA (Local Access Transport Area) : 322 Rate Center : GIRARD ZIP Code Count : 0 ZIP Code Frequency : Most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 44420 Other Information NPANXX : 234421 County Population : 0 Switch CLLI (Common Language Location Identifier) : YNTWOH02ZMD 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 : AT&T LOCAL OCN (Operating Company Number) : 7421 Coverage Area Name : GIRARD Latitude : 41.1054 Longitude : -80.6442 ‹ previous : 234-414 next › : 234-429 Telephone Number List 234-421-0000 ~ 234-421-9999