Starting Saturday, March 5, the entire 918 area code geographic region will add another area code to the system - area code 539. From that day forward, all calls made must include 10 digits (the area code and the seven digit number).
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918 and 539 Area Code Overlay
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Starting Saturday, March 5, the entire 918 area code geographic region will add another area code to the system - area code 539. From that day forward, all calls made must include 10 digits (the area code and the seven digit number).