https://en.wikipedia.org/wiki/Area_code_928
North American area code 928 is a telephone area code in the state of Arizona that was created in a split from area code 520 on June 23, 2001, due mainly to population gains in Tucson, Yuma and Flagstaff. 928 covers northern, eastern, and western portions of Arizona. The area code encompasses areas such as Beaver Dam, the Grand Canyon, Flagstaff, Holbrook, Lake Havasu …