CenturyLink in Tucson, AZ
These numbers are located in the city of Tucson part of Pima county. There are a few other subcodes that cover this area as well so take care not to confuse them.
Pima county is situated in Arizona and operates MT (UTC -07:00) time. This number group covers the 85705, 85717, 85739, & 85714 zip codes.