Area Code 203-249 located in OLD GREENWICH, FAIRFIELD, CT, more detail is as below. Place NPA (Numbering Plan Area) : 203 NXX (Local Number Prefix) : 249 City : OLD GREENWICH County : FAIRFIELD State : CT (Connecticut) NXX Use Type : Wireless NXX Intro Version : 1997-04-01 FIPS (Federal Information Processing Standards) : 09001 LATA (Local Access Transport Area) : 920 Rate Center : STAMFORD ZIP Code Count : 1 ZIP Code Frequency : 50 ZIP Code : 06870 Other Information NPANXX : 203249 County Population : 0 Switch CLLI (Common Language Location Identifier) : SMFRCT02DS0 MSA CBSA (Core Based Statistical Area) : Bridgeport-Stamford-Norwalk, CT MSA CBSA Code (Core Based Statistical Area) : 14860 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 : STAMFORD Latitude : 41.0528 Longitude : -73.5361 ‹ previous : 203-248 next › : 203-249 Telephone Number List 203-249-0000 ~ 203-249-9999