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Area codes are also assigned for non-geographic purposes. The rules for numbering NPAs do not permit the digits 0 and 1 in the leading position. [1] Area codes with two identical trailing digits are easily recognizable codes (ERC). NPAs with 9 in the second position are reserved for future format expansion.
Area codes 608 and 353 are telephone area codes in the North American Numbering Plan for much of southwestern Wisconsin, including the state capital city Madison. Area code 608 was assigned in 1955 to a numbering plan area created from areas with area code 414 and area code 715 , [ 1 ] and was the third area code created in Wisconsin. [ 2 ]
Map of Oklahoma with area code boundaries. The state of Oklahoma is served by the following area codes: 405/572: Central Oklahoma including Oklahoma City (original area code created in 1947; 572 added as overlay on April 24, 2021 [1] [2] [3] 580: Western and southern Oklahoma (split from 405 in 1997)
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, respectively. [ 1 ] In 1950, the boundaries of the numbering plan area were redrawn to produce a division of the northern and central parts along a north–south ...
Area code Location 316: city of Wichita and the surrounding area 620: most of southern Kansas, excluding those areas covered by the 316 area code 785: most of northern Kansas, excluding those areas covered by the 913 area code 913: the Kansas portion of the Kansas City Metropolitan Area
Toll-free telephone numbers in the North American Numbering Plan have the area code prefix 800, 833, 844, 855, 866, 877, or 888. Additionally, area codes 822, 880 through 887, and 889 are reserved for toll-free use in the future. 811 is excluded because it is a special dialing code in the group NXX for various other purposes.
The state of Utah is divided into two telephone numbering plan areas in the North American Numbering Plan, which are assigned a total of three area codes, two overlay codes for the Salt Lake City area, and one code for the rest of the state. 801: Area code 801 is Utah's original area code, assigned to the entire state in 1947. It serves the ...
The 574 area code covers north-central Indiana, and includes the cities of South Bend, North Judson and Warsaw. The 260 area code covers the northeast section of Indiana, including Fort Wayne and Angola. Prior to January 2002, the entire northern part of Indiana was under the 219 area code. Population growth and increases in cell phone numbers ...