Oklahoma area codes

The 405 soon will be the 405/572.

The North American Numbering Plan Administrator, which oversees much of the continent’s telephone area codes, announced Thursday that 572 will be the numerical designation for an overlay area code authorized for central Oklahoma this week.

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The administrator, a contracted company that oversees area codes for the U.S. Federal Communications Commission, had projected the 405 area code that serves this part of the state would run out of telephone numbers by December 2021.

An overlay code, which wasn’t technically feasible until about the 1990s, is used to support telecommunications numbers added to a geographical area where “number exhaustion” issues exist.

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