About this number
(603) 774 is a landline based telephone number operated by Dunbarton Telephone Company and is located in zip code 03301 in the city of Concord, New Hampshire, which is in Merrimack County, and is in the Northeast. It has a Number Planning Area (NPA - also known as an Area Code) of 603 and Network Numbering Exchange (NXX - also known as a prefix) of 774. It has an Operating Company Number (OCN) of 43. A Common Language Location Identifier (CLLI) of DNTNNHXADS0. As well as a Local access and transport area (LATA) of 122. Zip code 03301 has a population of 33,008 as of the 2010 census.