Area Code 603-948 located in ROCHESTER, STRAFFORD, NH, more detail is as below. Place NPA (Numbering Plan Area) : 603 NXX (Local Number Prefix) : 948 City : ROCHESTER County : STRAFFORD State : NH (New Hampshire) NXX Use Type : Landline NXX Intro Version : 2/26/2008 FIPS (Federal Information Processing Standards) : 33017 LATA (Local Access Transport Area) : 122 Rate Center : ROCHESTER ZIP Code Count : 0 ZIP Code Frequency : 0 ZIP Code : 03868 Other Information NPANXX : 603948 County Population : 0 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 : IDT AMERICA CORP - NH OCN (Operating Company Number) : 314C Coverage Area Name : ROCHESTER Latitude : 43.3036 Longitude : -70.9715 ‹ previous : 603-947 next › : 603-949 Telephone Number List 603-948-0000 ~ 603-948-9999