A month after 10-digit dialing for local calls was introduced in the 918 area code, the new 539 area code began being assigned to new customers Friday, state and company officials said. Cox ...

TULSA, Oklahoma -- Oklahomans in the 918 area code exchange could start getting 539 area code numbers starting Friday. The Oklahoma Corporation Commission says it's not certain that will happen on ...

The Oklahoma Corporation Commission released a frequently asked question (FAQ) list about the upcoming mandatory 10-digit dialing. Starting March 5, all phone calls will need to be dialed by including ...

The portion of Oklahoma adjacent to Northwest Arkansas soon will have a second telephone area code in place. The Oklahoma Corporation Commission approved the use of a 539 area code to overlay the ...

(Tulsa, OK) – It's no joke, the new 539 area code phone numbers can be issued starting Friday, April 1 st. The 539 area code is being laid over the 918 area code. Matt Skinner with the Oklahoma ...

TULSA, Oklahoma -- Ten-digit dialing begins Saturday, March 5, 2011, for everyone in the 918 area code. Every call you make will need the area code, even if it's local. You won't need to dial a "one" ...