About this number
(423) 438 is a landline based telephone number operated by Level 3 Communications, LLC - and is located in zip code 37917 in the city of Knoxville, Tennessee, which is in Knox 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 438. It has an Operating Company Number (OCN) of 4806. A Common Language Location Identifier (CLLI) of KNVLTNMANMD. As well as a Local access and transport area (LATA) of 474. It was first assigned for usage on 05/02/2002. Zip code 37917 has a population of 24,072 as of the 2010 census.