Oklahoma 405 Area Code Gets New Overlay
News - 9.16.2020 - 2 min read

Oklahoma 405 Area Code Gets New Overlay

Oklahoma City Map New Overlay
The Oklahoma region currently served by the area code 405 will soon have an additional area code - 572. If you live in the area, you might have to change the way you dial locally. Here’s what you need to know:

What is an area code overlay?

An overlay is the addition of another area code to the same geographic region as an existing area code to ensure there are enough new numbers for a growing population. In this instance, Oklahoma City is adding 572 to the area currently being serviced by the 405 area code.
This does not mean that your current 405 number will change, but you will need to make some changes to the way you dial local numbers in this area.

Who will be affected?

The 405 area code covers the Oklahoma City Metropolitan Area. Some of the larger cities in the 405 area code are:
  • Oklahoma City
  • Edmond
  • Norman
The new 572 area code will serve the same geographic area currently served by the existing 405 area code.

What will be the new dialing procedure?

To complete local calls in the affected areas, the new dialing procedure requires callers to dial area code + telephone number. This means that all local calls in the 405 area code that are currently dialed with seven digits will need to be dialed with ten digits using the new area code + telephone number procedure. The same dialing procedure will apply to telephone numbers assigned to the new 572 area code.

When will the change begin?

Effective October 24, 2020, you should begin using the new dialing procedures whenever you place a call from the 405 area code. If you forget and dial just seven digits, your call will still complete.
Beginning April 24, 2021, you must use the new dialing procedures, as described above. On and after this date, if you do not use the new dialing procedures, your calls will not complete.
Beginning May 24, 2021, new telephone lines or services may be assigned numbers using the new 572 area code.

What will you need to do?

Update your automated services. In addition to changing your dialing procedures, all services, automatic dialing equipment, or other types of equipment that are programmed to dial a 7-digit number will need to be reprogrammed to use the new dialing procedures. Some examples are life safety systems, stored telephone numbers in contact lists in phones, PBXs, fax machines, Internet dial-up numbers, alarm and security systems or gates, speed dialers, call forwarding settings, voicemail services, etc. You may also want to check your business stationery or advertising materials to ensure the area code is included.

What will remain the same?

The most important facts for consumers to know about the upcoming 405/572 area code overlay are: Your current telephone number, including current area code, will not change.
  • What is a local call now will remain a local call.
  • The price of a call, coverage area, or other rates and services will not change due to the overlay.
  • You can still dial just three digits to reach 911. You can also dial three digits to reach 211 and 811, as well as 311 and 511, where available.

Who can you contact with questions?

If you have any questions regarding the information provided in this notice, please call our support team at 1-800-980-9750 or go to Oklahoma Corporation Commission for more information.
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