Area Code 860-403 located in ENFIELD, HARTFORD, CT, more detail is as below. Place NPA (Numbering Plan Area) : 860 NXX (Local Number Prefix) : 403 City : ENFIELD County : HARTFORD State : CT (Connecticut) NXX Use Type : Landline NXX Intro Version : 1996-01-10 FIPS (Federal Information Processing Standards) : 09003 LATA (Local Access Transport Area) : 920 Rate Center : HARTFORD ZIP Code Count : 4 ZIP Code Frequency : 40 ZIP Code : 06082 Other Information NPANXX : 860403 Switch CLLI (Common Language Location Identifier) : HRFRCT03DS1 MSA CBSA (Core Based Statistical Area) : Hartford-West Hartford-East Hartford, CT MSA CBSA Code (Core Based Statistical Area) : 25540 Time Zone : Eastern (GMT -05:00) Observes Daylight Saving Time : Yes Company : SOUTHERN NEW ENGLAND TELEPHONE CO. OCN (Operating Company Number) : 9147 Coverage Area Name : HARTFORD Latitude : 41.7677 Longitude : -72.6778 ‹ previous : 860-402 next › : 860-403 Telephone Number List 860-403-0000 ~ 860-403-9999