Area Code 603-454 located in SUNAPEE, SULLIVAN, NH, more detail is as below. Place NPA (Numbering Plan Area) : 603 NXX (Local Number Prefix) : 454 City : SUNAPEE County : SULLIVAN State : NH (New Hampshire) NXX Use Type : Wireless NXX Intro Version : 1999-05-10 FIPS (Federal Information Processing Standards) : 33019 LATA (Local Access Transport Area) : 122 Rate Center : SUNAPEE ZIP Code Count : 0 ZIP Code Frequency : Most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 03782 Other Information NPANXX : 603454 County Population : 0 Switch CLLI (Common Language Location Identifier) : MRMCNHGICM0 MSA CBSA (Core Based Statistical Area) : Claremont, NH MSA CBSA Code (Core Based Statistical Area) : 17200 Time Zone : Eastern (GMT -05:00) Observes Daylight Saving Time : Yes Company : UNITED STATES CELLULAR CORP. - NEW HAMPSHIRE OCN (Operating Company Number) : 6290 Coverage Area Name : SUNAPEE Latitude : 43.3834 Longitude : -72.0816 ‹ previous : 603-453 next › : 603-455 Telephone Number List 603-454-0000 ~ 603-454-9999