Area Code 603-658 located in HAMPSTEAD, ROCKINGHAM, NH, more detail is as below. Place NPA (Numbering Plan Area) : 603 NXX (Local Number Prefix) : 658 City : HAMPSTEAD County : ROCKINGHAM State : NH (New Hampshire) NXX Use Type : Landline NXX Intro Version : 1999-05-10 FIPS (Federal Information Processing Standards) : 33015 LATA (Local Access Transport Area) : 122 Rate Center : EXETER ZIP Code Count : 1 ZIP Code Frequency : 50 ZIP Code : 03841 Other Information NPANXX : 603658 County Population : 0 Switch CLLI (Common Language Location Identifier) : PTMONH07DS0 MSA CBSA (Core Based Statistical Area) : Boston-Cambridge-Quincy, MA-NH MSA CBSA Code (Core Based Statistical Area) : 14460 Time Zone : Eastern (GMT -05:00) Observes Daylight Saving Time : Yes Company : FREEDOM RING COMMUNICATIONS, LLC OCN (Operating Company Number) : 8468 Coverage Area Name : EXETER Latitude : 42.9797 Longitude : -70.9519 ‹ previous : 603-657 next › : 603-658 Telephone Number List 603-658-0000 ~ 603-658-9999