The 520 area code received a few more years of life as Southern Arizona's solo area code after Arizona Corporation Commission ...
Starting in late October, millions of Arizonans including residents of Tucson and Pima County will have to dial the area code along with the local number to call their neighbors under new federal ...
The addition of the 480 and 623 area codes in 1999 caused some initial confusion. The 520 area code was designated for areas outside Maricopa County in 1995. The 520 was split to add a 928 area code ...
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