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Clickable map of Arizona area codes in blue (and border states) The U.S. state of Arizona is served by five telephone area codes in three numbering plan areas: Area codes 602, 480, and 623 serve the Phoenix metropolitan area. The three area codes were recombined in 2023 into an overlay complex after a 1999 split:
Area codes 602, 480, and 623 are telephone area codes in the North American Numbering Plan (NANP) for most of the Phoenix metropolitan area in the U.S. state of Arizona.. Area code 602 is the oldest area code in Arizona and was assigned in 1947 for the entire state.
On that date, use of 520 became mandatory for rural Arizona. The new area code became mandatory in Flagstaff, Prescott, and Yuma on June 30, 1996, and in Tucson on December 31, 1996. The freed central office codes in 602 were then used for new telephone numbers in the Phoenix area. [5]
Telephone numbers listed in 1920 in New York City having three-letter exchange prefixes. In the United States, the most-populous cities, such as New York City, Philadelphia, Boston, and Chicago, initially implemented dial service with telephone numbers consisting of three letters and four digits (3L-4N) according to a system developed by W. G. Blauvelt of AT&T in 1917. [1]
Arizona (Phoenix metropolitan area; primarily the West Valley) March 1, 1999: created by three-way split of 602 (along with 480) 2023: combined with 602 and 480 into an overlay complex for the Phoenix metropolitan area; 624: New York (Buffalo, Niagara Falls, Olean, and parts of western New York) November 16, 2023: overlaid on 716; 625
Clickable map of Arizona area codes in blue (and border states) with area code 928 shown in red. Area code 928 is a telephone area code in the North American Numbering Plan for the U.S. state of Arizona. The numbering plan area comprises the northern, eastern, and western portions of the state. [1]