Area Code 928

You can increase your connection rate up to 30% by dialing from a local number.

Local Presence by Tenfold gives you one-click access from your existing phone system to a local number in the US area code 928 and more than 200 others.

Reach out to customers in Yuma, Flagstaff, Prescott, Sedona, Bullhead City, Kingman, and Lake Havasu City.

Source: Wikipedia