About this number
(605) 312 is a landline based telephone number operated by Qwest Corporation and is located in zip code 57102 in the city of Sioux Fls, South Dakota, which is in Minnehaha County, and is in the Midwest. It has a Number Planning Area (NPA - also known as an Area Code) of 605 and Network Numbering Exchange (NXX - also known as a prefix) of 312. It has an Operating Company Number (OCN) of 9631. A Common Language Location Identifier (CLLI) of SXFLSDCODS2. As well as a Local access and transport area (LATA) of 640. It was first assigned for usage on 10/02/2007.