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Area code 520 is a telephone area code in the North American Numbering Plan (NANP) for the U.S. state of Arizona. The numbering plan area comprises Tucson and most of the southeastern part of the state. Area code 520 was created in a split of area code 602 on March 19, 1995. Previously, 602 had been the sole area code for the entire state of ...
In 1947, the American Telephone and Telegraph Company (AT&T) devised the first nationwide telephone numbering plan and assigned the original North American area codes. The state of California was divided into three numbering plan areas (NPAs) with distinct area codes: 213, 415, and 916, for the southern, central, and northern parts of the state ...
1995: split to create 520; 1999: ... but the exchange remains reserved in each individual area code. 951: California (western Riverside County, including Riverside, ...
602 was the original area code for Arizona, and was split in 1995 into 602, serving metropolitan Phoenix, and 520, serving the remainder of the state. [1] In 1999, 602 was split into 480, 602, and 623, [2] which were recombined in 2023. [3] 520 was split in 2001 to form area code 928. [4]
At the same time, local exchanges were allowed to use 1 or 0 as a middle digit. The first area codes without a 1 or 0 as the middle digit were area code 334 in Alabama and area code 360 in Washington, which both began service on January 15, 1995. This was followed quickly by area code 520 serving Arizona on March 19, 1995.
Area code 517; Area codes 518 and 838; Area code 520; Area codes 530 and 837; Area codes 540 and 826; Area code 458 and 541; Area codes 541 and 458; Area code 555; Area code 559; Area codes 561 and 728; Area code 562; Area code 563; Area code 564; Area codes 570 and 272; Area code 571; Area codes 703 and 571; Area codes 573 and 235; Area code ...
Area code 520; Area codes 602, 480, and 623; Area code 623; Area code 928 ... Contact Wikipedia; Code of Conduct; Developers; Statistics; Cookie statement; Mobile ...
0–9. Area codes 209 and 350; Area codes 213, 323, and 738; Area codes 310 and 424; Area codes 408 and 669; Area codes 415 and 628; Area codes 510 and 341