About this number
(603) 428-0003 is a landline based telephone number operated by Merrimack Co. Telephone Co., D and is located in zip code 3242 in the city of Henniker, 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, a Network Numbering Exchange (NXX - also known as a prefix) of 428 and a subscriber number of 0003. It has an Operating Company Number (OCN) of 3320. A Common Language Location Identifier (CLLI) of HNKRNHXARS2. As well as a Local access and transport area (LATA) of 122. It was first assigned for usage on 01/01/1901. Zip code 3242 has a population of 4,836 as of the 2010 census.