Area Code 603-908 located in ALSTEAD, CHESHIRE, NH, more detail is as below. Place NPA (Numbering Plan Area) : 603 NXX (Local Number Prefix) : 908 City : ALSTEAD County : CHESHIRE State : NH (New Hampshire) NXX Use Type : Landline NXX Intro Version : 1999-05-10 FIPS (Federal Information Processing Standards) : 33005 Rate Center : ALSTEAD ZIP Code Count : 0 ZIP Code Frequency : Most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 03602 Other Information NPANXX : 603908 County Population : 0 Switch CLLI (Common Language Location Identifier) : MNCHNHN1FF2 MSA CBSA (Core Based Statistical Area) : Keene, NH MSA CBSA Code (Core Based Statistical Area) : 28300 Time Zone : Eastern (GMT -05:00) Observes Daylight Saving Time : Yes Latitude : None Longitude : None ‹ previous : 603-907 next › : 603-909 Telephone Number List 603-908-0000 ~ 603-908-9999