About this number
(713) 721 is a landline based telephone number operated by Southwestern Bell and is located in zip code 77035 in the city of Houston, Texas, which is in Harris County, and is in the South. It has a Number Planning Area (NPA - also known as an Area Code) of 713 and Network Numbering Exchange (NXX - also known as a prefix) of 721. It has an Operating Company Number (OCN) of 9533. A Common Language Location Identifier (CLLI) of HSTNTXPADS0. As well as a Local access and transport area (LATA) of 560. Zip code 77035 has a population of 35,896 as of the 2010 census.