![]() An overlay does not require customers to change their existing area code or telephone number but does require using a new dialing procedure to complete calls. This process is known as an area code overlay.Īn overlay is the addition of another area code (771) to the same geographic region as an existing area code (202). To ensure a continuing supply of telephone numbers, the Public Service Commission of the District of Columbia approved the addition of the new 771 area code to the geographic region served by the 202 area code. ![]() Ap| Industry Area Code Overlay Approved for the Washington, DC 202 Area Code This message originated with The Monitoring Association.
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