Area code 402 is the original telephone numbering plan code for Nebraska in the North American Numbering Plan. In 1954, this area code was split: eastern Nebraska retained 402, and western Nebraska was placed in area code 308. The roughly U-shaped 308/402 line generally runs (from south to north): northeast along the Platte River and then northwest along the eastern edge of the Sandhills.
Major cities
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| State of Nebraska area codes: 308, 402 |
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North: 605 |
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| West: 308 |
Area code 402 |
East: 712 and 660 |
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South: 785 |
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| State of Iowa area codes: 319, 515, 563, 641, 712 |
| State of Kansas area codes: 316, 620, 785, 913 |
| State of Missouri area codes: 314, 417, 573, 636, 660, 816 |
| State of South Dakota area code: 605 |
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