Area Code 603-576 located in WARREN, GRAFTON, NH, more detail is as below. Place NPA (Numbering Plan Area) : 603 NXX (Local Number Prefix) : 576 City : WARREN County : GRAFTON State : NH (New Hampshire) NXX Use Type : Landline NXX Intro Version : 1998-08-14 FIPS (Federal Information Processing Standards) : 33009 LATA (Local Access Transport Area) : 122 Rate Center : ORFORD ZIP Code Count : 0 ZIP Code Frequency : Second most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 03279 Other Information NPANXX : 603576 County Population : 0 Switch CLLI (Common Language Location Identifier) : MNCHNHNIDS0 MSA CBSA (Core Based Statistical Area) : Lebanon, NH-VT MSA CBSA Code (Core Based Statistical Area) : 30100 Time Zone : Eastern (GMT -05:00) Observes Daylight Saving Time : Yes Company : LEVEL 3 COMMUNICATIONS - NH OCN (Operating Company Number) : 4017 Coverage Area Name : LYME Latitude : 43.9017 Longitude : -72.1416 ‹ previous : 603-575 next › : 603-576 Telephone Number List 603-576-0000 ~ 603-576-9999