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The North American Numbering Plan (NANP) divides the territories of its members into geographic numbering plan areas (NPAs). Each NPA is identified by one or more numbering plan area codes (NPA codes, or area codes), consisting of three digits that are prefixed to each local telephone number having seven digits.
In 1951, a third NPA with area code 417 was created for southwestern Missouri, including the cities of Branson, Joplin, and Springfield. This reduced 816 to the northern third of Missouri, including the Kansas City metropolitan area.
Area code 417 is a telephone area code in the North American Numbering Plan (NANP) for the southwestern quadrant of Missouri, including the cities of Branson, Carl Junction, Carthage, Joplin, Lebanon, Neosho, Nixa, Ozark, Springfield, and West Plains. Area code 417 was created in 1951 as a split from area code 816.
Area codes 573 and 235 are telephone area codes in the North American Numbering Plan (NANP) for most of the eastern half of the U.S. state of Missouri outside the immediate St. Louis area, including the state capital of Jefferson City, as well as Columbia, Cape Girardeau, Hannibal, Rolla, and Sikeston.
In 1950, southwest Missouri, with a new toll-center in Joplin, received area code 417, a change that provided more central offices in Kansas City. In 1951, the number of area codes grew to ninety: the State of New York gained area code 516 on Long Island, and Southern California received area code 714 , to reduce the numbering plan area of Los ...
Each NPA was assigned a unique three-digit code, typically termed NPA code or simply area code. These codes were first used in Operator Toll Dialing by long-distance operators in establishing calls via trunks between toll offices. The goal of automatic service required additional technical advances in the latest generation of toll-switching ...
On October 24, 2000, the Missouri Public Service Commission announced plans to add a second area code for the 314 numbering plan area, creating an overlay, but postponed the implementation date (May 5, 2002) indefinitely on September 25, 2001, when the commission determined no immediate need for additional central office prefixes. [4]
Area codes of Missouri Area code 660 is the telephone area code in the North American Numbering Plan (NANP) for the northern and western part of the U.S. state of Missouri . It was created on October 12, 1997, in a split of the 816 numbering plan area (NPA)