Area Code 603-808 located in ANTRIM, HILLSBOROUGH, NH, more detail is as below. Place NPA (Numbering Plan Area) : 603 NXX (Local Number Prefix) : 808 City : ANTRIM County : HILLSBOROUGH State : NH (New Hampshire) NXX Use Type : Landline NXX Intro Version : 11/23/2009 FIPS (Federal Information Processing Standards) : 33011 LATA (Local Access Transport Area) : 122 Rate Center : ANTRIM ZIP Code Count : 0 ZIP Code Frequency : 0 ZIP Code : 03440 Other Information NPANXX : 603808 County Population : 0 MSA CBSA (Core Based Statistical Area) : Manchester-Nashua, NH MSA CBSA Code (Core Based Statistical Area) : 31700 Time Zone : Eastern (GMT -05:00) Observes Daylight Saving Time : Yes Company : COMCAST PHONE OF NEW HAMPSHIRE, LLC - NH OCN (Operating Company Number) : 4112 Coverage Area Name : ANTRIM Latitude : 43.0269 Longitude : -71.9386 ‹ previous : 603-807 next › : 603-809 Telephone Number List 603-808-0000 ~ 603-808-9999