Area Code 203-344 located in HAMDEN, NEW HAVEN, CT, more detail is as below. Place NPA (Numbering Plan Area) : 203 NXX (Local Number Prefix) : 344 City : HAMDEN County : NEW HAVEN State : CT (Connecticut) NXX Use Type : Landline NXX Intro Version : 1998-01-25 FIPS (Federal Information Processing Standards) : 09009 LATA (Local Access Transport Area) : 920 Rate Center : OLDGRNWICH ZIP Code Count : 1 ZIP Code Frequency : 100 ZIP Code : 06518 Other Information NPANXX : 203344 County Population : 0 Switch CLLI (Common Language Location Identifier) : NRWLCTCVDS0 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 : CABLEVISION LIGHTPATH, INC. - CT OCN (Operating Company Number) : 4950 Coverage Area Name : OLD GREENWICH Latitude : 41.0302 Longitude : -73.5668 ‹ previous : 203-343 next › : 203-345 Telephone Number List 203-344-0000 ~ 203-344-9999