Area codes 402 and 531

42°00′N 98°00′W / 42.0°N 98.0°W / 42.0; -98.0

Area codes 402 and 531 are telephone area codes in the North American Numbering Plan (NANP) for the eastern part of the U.S. state of Nebraska. Area code 402 was one of the original North American area codes created in 1947, when it was assigned to the entire state. By splitting the numbering plan area (NPA) in 1954, it was reduced to roughly just the eastern half, including Lincoln, the state capital, and Omaha, the largest city in the state. In 2011, the North American Numbering Plan Administrator (NANPA) authorized an overlay complex for which area code 531 was added to the same service area.