About this number
(512) 218 is a landline based telephone number operated by Southwestern Bell and is located in zip code 78664 in the city of Round Rock, 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 218. It has an Operating Company Number (OCN) of 9533. A Common Language Location Identifier (CLLI) of AUSTTXRRDS0. As well as a Local access and transport area (LATA) of 558. Zip code 78664 has a population of 52,932 as of the 2010 census.