Area Code 603-536 located in HOLDERNESS, GRAFTON, NH, more detail is as below. Place NPA (Numbering Plan Area) : 603 NXX (Local Number Prefix) : 536 City : HOLDERNESS County : GRAFTON State : NH (New Hampshire) NXX Use Type : Landline NXX Intro Version : 1994-02-04 FIPS (Federal Information Processing Standards) : 33009 LATA (Local Access Transport Area) : 122 Rate Center : PLYMOUTH ZIP Code Count : 416 ZIP Code Frequency : 12 ZIP Code : 03245 Other Information NPANXX : 603536 County Population : 0 Switch CLLI (Common Language Location Identifier) : PLMONHLHRS1 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 : NO NEW ENGLAND TEL OP DBA FAIRPOINT COMM - NH OCN (Operating Company Number) : 5113 Coverage Area Name : PLYMOUTH Latitude : 43.7596 Longitude : -71.6910 ‹ previous : 603-536 next › : 603-536 Telephone Number List 603-536-0000 ~ 603-536-9999