Area Code 203-231 located in ANSONIA, NEW HAVEN, CT, more detail is as below. Place NPA (Numbering Plan Area) : 203 NXX (Local Number Prefix) : 231 City : ANSONIA County : NEW HAVEN State : CT (Connecticut) NXX Use Type : Wireless NXX Intro Version : 1997-04-01 FIPS (Federal Information Processing Standards) : 09009 LATA (Local Access Transport Area) : 920 Rate Center : ANSONIDRBY ZIP Code Count : 0 ZIP Code Frequency : Most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 06401 Other Information NPANXX : 203231 County Population : 0 Switch CLLI (Common Language Location Identifier) : WLFRCTAICM3 MSA CBSA (Core Based Statistical Area) : New Haven-Milford, CT MSA CBSA Code (Core Based Statistical Area) : 35300 Time Zone : Eastern (GMT -05:00) Observes Daylight Saving Time : Yes Company : CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT OCN (Operating Company Number) : 6388 Coverage Area Name : DERBY Latitude : 41.3242 Longitude : -73.0881 ‹ previous : 203-231 next › : 203-232 Telephone Number List 203-231-0000 ~ 203-231-9999
