About this number
(903) 566 is a landline based telephone number operated by Southwestern Bell and is located in zip code 75710 in the city of Tyler, Texas, which is in Smith County, and is in the South. It has a Number Planning Area (NPA - also known as an Area Code) of 903 and Network Numbering Exchange (NXX - also known as a prefix) of 566. It has an Operating Company Number (OCN) of 9533. A Common Language Location Identifier (CLLI) of TYLRTXCHRS0. As well as a Local access and transport area (LATA) of 554. Zip code 75710 has a population of 664 as of the 2010 census.