About this number
(520) 456 is a landline based telephone number operated by Qwest Corporation and is located in zip code 85635 in the city of Sierra Vista, Arizona, which is in Cochise County, and is in the West. It has a Number Planning Area (NPA - also known as an Area Code) of 520 and Network Numbering Exchange (NXX - also known as a prefix) of 456. It has an Operating Company Number (OCN) of 9636. A Common Language Location Identifier (CLLI) of SRVSAZNORS1. As well as a Local access and transport area (LATA) of 668. Zip code 85635 has a population of 34,727 as of the 2010 census.