About this number
(903) 231 is a landline based telephone number operated by Level 3 Communications, LLC - and is located in zip code 75204 in the city of Dallas, Texas, which is in Dallas 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 231. It has an Operating Company Number (OCN) of 6114. A Common Language Location Identifier (CLLI) of DLLSTXTA8MD. As well as a Local access and transport area (LATA) of 552. Zip code 75204 has a population of 26,279 as of the 2010 census.