Effective April 24

Add 405 On Local Tele Calls

Customers with a 405 Area Code must dial the Area Code plus the telephone number for all calls beginning April 24, The Black Chronicle has learned.

To ensure a continuing supply of telephone numbers, the new 572 Area Code will be added to the area served by 405.  This is known as an Area Code overlay.

“Get ready to change the way you dial your local calls,” it was said.

What is an Area Code overlay?

An overlay is the addition of another Area Code (572) to the same geographic–region as an existing Area Code (405).  An overlay does not require customers to change their existing Area Code.

Who will be affected?

The 405 Area Code serves all or portions of 19 counties in the central part of the state which includes Oklahoma City, the state capital and state’s most populous city.  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, the new dialing procedure requires callers to dial Area Code + telephone number.  This means that all calls in the 405 Area Code that are currently dialed with seven digits will need to be dialed using Area Code plus telephone number. 

The same dialing procedure will apply to telephone numbers assigned to the new 572 Area Code.

When will the change begin?

Effective April 24, callers must use the new dialing procedures, as described above for all calls. 

After that date, if you do not use the new dialing procedures, your calls will not be completed, and a recording will instruct you to hang up and dial again.

Beginning May 24, new telephone lines or services may be assigned numbers using the new 572 Area Code.

What will you need to do?

In addition to changing your dialing procedures, all services, automatic dialing equipment or other types of equipment that are programmed with a 7-digit number will need to be reprogrammed to use the new dialing procedures. 

Some examples are life safety systems, PBX’s, fax machines, Internet dial-up numbers, alarm and security systems, gates, speed dialers, call forwarding settings, voicemail services. etc. 

Callers may also want to check their business stationery or advertising materials to ensure the Area Code is included.

What will remain the same?

•Callers’  telephone number, including current Area Code, will not change.

•       The price of a call, coverage area or other rates and services will not change due to the overlay.

•       What is a local call now will remain a local call regardless of the number of digits dialed.

•       Callers can still dial just three digits to reach 911.

•       If 211, 311, 411, 511, 611, 711 or 811 are currently available in one’s community, they will still dial these codes with just three digits.

Who may callers contact with questions?

If callers have any questions regarding information provided in this notice, please call Cox at 405-600-7676 or access the following websites for more information: https://www.cox.com/residential/contactus.html or http://occeweb.com/Public Utility Division Consumer Services (open Mondays-Fridays, 8 a.m. until 4:30 p.m.) 405-521-2331 CS@occ.ok.gov.

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