About this number
(423) 405 is a wireless/mobile based telephone number operated by Sprint Spectrum L.P. and is located in zip code 37921 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 405. It has an Operating Company Number (OCN) of 6664. A Common Language Location Identifier (CLLI) of KNVLTNTWCM0. As well as a Local access and transport area (LATA) of 474. It was first assigned for usage on 03/29/2011. Zip code 37921 has a population of 28,233 as of the 2010 census.