About this number
(423) 639 is a landline based telephone number operated by United Telephone-Southeast-Tn and is located in zip code 37745 in the city of Greeneville, Tennessee, which is in Greene 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 639. It has an Operating Company Number (OCN) of 4510. A Common Language Location Identifier (CLLI) of GRVLTNXADS0. As well as a Local access and transport area (LATA) of 956. Zip code 37745 has a population of 18,401 as of the 2010 census.