Area codes 918 and 539

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Area codes 918 and 539 are telephone overlay area codes in the North American Numbering Plan for the northeast of Oklahoma, including the city of Tulsa. The numbering plan area also comprises Bartlesville, Broken Arrow, Claremore, Gore, Jenks, McAlester, Muskogee, Okmulgee, Pryor, Sapulpa, Tahlequah.

Area code 918 was created in 1953 in an area code split of 405. Area code 539 was added to the numbering plan area on April 1, 2011. Mandatory ten-digit dialing became effective on March 5, 2011. It is the first overlay in Oklahoma.[1][2]

Service area

Below is a full list of all towns and cities in the numbering plan area.

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References

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External links

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North: 620
West: 580, 405/572 539/918 East: 417, 479, 870
South: 580
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