About this number
(512) 278 is a landline based telephone number operated by Southwestern Bell and is located in zip code 78757 in the city of Austin, Texas, which is in Travis County, and is in the South. It has a Number Planning Area (NPA - also known as an Area Code) of 512 and Network Numbering Exchange (NXX - also known as a prefix) of 278. It has an Operating Company Number (OCN) of 9533. A Common Language Location Identifier (CLLI) of AUSTTXMADS0. As well as a Local access and transport area (LATA) of 558. Zip code 78757 has a population of 21,310 as of the 2010 census.