Area Code 603-790 located in WEST LEBANON, GRAFTON, NH, more detail is as below. Place NPA (Numbering Plan Area) : 603 NXX (Local Number Prefix) : 790 City : WEST LEBANON County : GRAFTON State : NH (New Hampshire) NXX Use Type : Landline NXX Intro Version : 2002-10-25 FIPS (Federal Information Processing Standards) : 33009 LATA (Local Access Transport Area) : 122 Rate Center : W LEBANON ZIP Code Count : 0 ZIP Code Frequency : Most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 03784 Other Information NPANXX : 603790 County Population : 0 Switch CLLI (Common Language Location Identifier) : MNCHNHNIW08 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 : RNK, INC. OCN (Operating Company Number) : 8700 Coverage Area Name : W LEBANON Latitude : 43.6489 Longitude : -72.3111 ‹ previous : 603-789 next › : 603-791 Telephone Number List 603-790-0000 ~ 603-790-9999