OKLAHOMA CITY (AP) — The Oklahoma Corporation Commission announced Wednesday its approval of a plan for an additional area code for 19 central Oklahoma counties in the 405 area, including Oklahoma County and Oklahoma City.
The commission said the North American Numbering Plan Administrator will announce the new area code later this month and it will be available in July.
Starting in January 2021, callers will have to dial 10 digits that include the area code plus the seven-digit number.
Commission spokesman Matt Skinner said existing phone numbers will not be affected or changed, but callers will have to dial all 10 digits to make a phone call.
The area code "overlay" is similar to one adopted in 2011 when the 539 code was added in the 918 area code region that includes Tulsa.
The commission said the additional area code is needed because the administrator has determined that the 405 area code will run out of available numbers in December 2021.