T-Mobile in Prescott, AZ
These numbers are located in the city of Prescott part of Yavapai county. There are a few other subcodes that cover this area as well so take care not to confuse them.
Yavapai county is situated in Arizona and operates MT (UTC -07:00) time. This number group covers the 86301, 86313, 86305, & 86304 zip codes.