About this number
(603) 509 is a landline based telephone number operated by Ctc Communications Corp. - Nh and is located in zip code 03820 in the city of Dover, New Hampshire, which is in Strafford 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 509. It has an Operating Company Number (OCN) of 2698. A Common Language Location Identifier (CLLI) of DOVRNHTH8MD. As well as a Local access and transport area (LATA) of 122. It was first assigned for usage on 09/24/2001. Zip code 03820 has a population of 30,039 as of the 2010 census.