About this number
(712) 255 is a landline based telephone number operated by Qwest Corporation and is located in zip code 51101 in the city of Sioux City, Iowa, which is in Woodbury County, and is in the Midwest. It has a Number Planning Area (NPA - also known as an Area Code) of 712 and Network Numbering Exchange (NXX - also known as a prefix) of 255. It has an Operating Company Number (OCN) of 9631. A Common Language Location Identifier (CLLI) of SXCYIADTDS1. As well as a Local access and transport area (LATA) of 630. Zip code 51101 has a population of 809 as of the 2010 census.