Area Code 603-484 located in GILMANTON, BELKNAP, NH, more detail is as below. Place NPA (Numbering Plan Area) : 603 NXX (Local Number Prefix) : 484 City : GILMANTON County : BELKNAP State : NH (New Hampshire) NXX Use Type : Landline NXX Intro Version : 1999-02-27 FIPS (Federal Information Processing Standards) : 33001 Rate Center : NASHUA ZIP Code Count : 1 ZIP Code Frequency : 100 ZIP Code : 03237 Other Information NPANXX : 603484 County Population : 0 Switch CLLI (Common Language Location Identifier) : MNCHNHN1FF2 MSA CBSA (Core Based Statistical Area) : Laconia, NH MSA CBSA Code (Core Based Statistical Area) : 29060 Time Zone : Eastern (GMT -05:00) Observes Daylight Saving Time : Yes Latitude : None Longitude : None ‹ previous : 603-483 next › : 603-485 Telephone Number List 603-484-0000 ~ 603-484-9999