About this number
(423) 288 is a landline based telephone number operated by United Telephone-Southeast-Tn and is located in zip code 37660 in the city of Kingsport, Tennessee, which is in Sullivan County, and is in the South. It has a Number Planning Area (NPA - also known as an Area Code) of 423 and Network Numbering Exchange (NXX - also known as a prefix) of 288. It has an Operating Company Number (OCN) of 4510. A Common Language Location Identifier (CLLI) of KGPTTNXCRS0. As well as a Local access and transport area (LATA) of 956. Zip code 37660 has a population of 40,038 as of the 2010 census.