Area Code 603-310 located in BEDFORD, HILLSBOROUGH, NH, more detail is as below. Place NPA (Numbering Plan Area) : 603 NXX (Local Number Prefix) : 310 City : BEDFORD County : HILLSBOROUGH State : NH (New Hampshire) NXX Use Type : Landline NXX Intro Version : 2001-06-30 FIPS (Federal Information Processing Standards) : 33011 LATA (Local Access Transport Area) : 122 Rate Center : BEDFORD ZIP Code Count : 0 ZIP Code Frequency : Most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 03110 Other Information NPANXX : 603310 County Population : 0 Switch CLLI (Common Language Location Identifier) : MNCHNHCOX9Y 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 : CTC COMMUNICATIONS CORP. - NH OCN (Operating Company Number) : 2698 Coverage Area Name : BEDFORD Latitude : 42.9935 Longitude : -71.4608 ‹ previous : 603-309 next › : 603-312 Telephone Number List 603-310-0000 ~ 603-310-9999