About this number
(903) 423 is a wireless/mobile based telephone number operated by T-Mobile Usa, Inc. and is located in zip code 75234 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 423. It has an Operating Company Number (OCN) of 6529. A Common Language Location Identifier (CLLI) of DLLTTX01CM0. As well as a Local access and transport area (LATA) of 552. Zip code 75234 has a population of 28,794 as of the 2010 census.