Area Code 603-939 located in CONWAY, CARROLL, NH, more detail is as below. Place NPA (Numbering Plan Area) : 603 NXX (Local Number Prefix) : 939 City : CONWAY County : CARROLL State : NH (New Hampshire) NXX Use Type : Landline NXX Intro Version : 1996-01-10 FIPS (Federal Information Processing Standards) : 33003 LATA (Local Access Transport Area) : 122 Rate Center : EASTCONWAY ZIP Code Count : 27 ZIP Code Frequency : 19 ZIP Code : 03818 Other Information NPANXX : 603939 County Population : 0 Switch CLLI (Common Language Location Identifier) : FRBGMEXARS2 Time Zone : Eastern (GMT -05:00) Observes Daylight Saving Time : Yes Company : NORTHLAND TELEPHONE OF MAINE, INC. OCN (Operating Company Number) : 3316 Coverage Area Name : CENTER CONWAY Latitude : 44.0147 Longitude : -70.9795 ‹ previous : 603-938 next › : 603-939 Telephone Number List 603-939-0000 ~ 603-939-9999