Area Code 603-212 located in SALEM, ROCKINGHAM, NH, more detail is as below. Place NPA (Numbering Plan Area) : 603 NXX (Local Number Prefix) : 212 City : SALEM County : ROCKINGHAM State : NH (New Hampshire) NXX Use Type : Landline NXX Intro Version : 2001-03-03 FIPS (Federal Information Processing Standards) : 33015 LATA (Local Access Transport Area) : 122 Rate Center : SALEM ZIP Code Count : 0 ZIP Code Frequency : Most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 03079 Other Information NPANXX : 603212 County Population : 0 Switch CLLI (Common Language Location Identifier) : SALMNHNBDS1 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 : NO NEW ENGLAND TEL OP DBA FAIRPOINT COMM - NH OCN (Operating Company Number) : 5113 Coverage Area Name : SALEM Latitude : 42.7854 Longitude : -71.2270 ‹ previous : 603-210 next › : 603-213 Telephone Number List 603-212-0000 ~ 603-212-9999