About this number
(956) 421-0005 is a landline based telephone number operated by Southwestern Bell and is located in zip code 78550 in the city of Harlingen, Texas, which is in Cameron County, and is in the South. It has a Number Planning Area (NPA - also known as an Area Code) of 956, a Network Numbering Exchange (NXX - also known as a prefix) of 421 and a subscriber number of 0005. It has an Operating Company Number (OCN) of 9533. A Common Language Location Identifier (CLLI) of HRLNTXHGDS0. As well as a Local access and transport area (LATA) of 568. Zip code 78550 has a population of 53,152 as of the 2010 census.