About this number
(423) 257 is a landline based telephone number operated by United Telephone-Southeast-Tn and is located in zip code 37681 in the city of Limestone, Tennessee, which is in Washington 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 257. It has an Operating Company Number (OCN) of 4510. A Common Language Location Identifier (CLLI) of LMSTTNXADS0. As well as a Local access and transport area (LATA) of 956. Zip code 37681 has a population of 6,121 as of the 2010 census.