Area Code 603-468 located in SEABROOK, ROCKINGHAM, NH, more detail is as below. Place NPA (Numbering Plan Area) : 603 NXX (Local Number Prefix) : 468 City : SEABROOK County : ROCKINGHAM State : NH (New Hampshire) NXX Use Type : Landline NXX Intro Version : 1999-10-13 FIPS (Federal Information Processing Standards) : 33015 LATA (Local Access Transport Area) : 122 Rate Center : SEABROOK ZIP Code Count : 0 ZIP Code Frequency : Most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 03874 Other Information NPANXX : 603468 County Population : 0 Switch CLLI (Common Language Location Identifier) : PTMONHO7DS0 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 : SEABROOK Latitude : 42.8770 Longitude : -70.8583 ‹ previous : 603-467 next › : 603-469 Telephone Number List 603-468-0000 ~ 603-468-9999