Area Code 603-574 located in HEBRON, GRAFTON, NH, more detail is as below. Place NPA (Numbering Plan Area) : 603 NXX (Local Number Prefix) : 574 City : HEBRON 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 : ALSTEAD ZIP Code Count : 1 ZIP Code Frequency : 100 ZIP Code : 03241 Other Information NPANXX : 603574 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 : ALSTEAD Latitude : 43.1472 Longitude : -72.3592 ‹ previous : 603-573 next › : 603-575 Telephone Number List 603-574-0000 ~ 603-574-9999