Depending on where you live, you may need to use a 10-digit number instead of a 7-digit number to make local calls.

New area codes are constantly being added, which may affect the way that you make your outgoing phone calls.

Area codes with more recent activity include a customer notification with more information about changes. For information on recent area code activities and how they may affect you, review your state and area code.

The following state list is area codes that require 10-digit dialing, even for local calls. An overlay doesn’t require customers to change their existing area code or telephone number. An overlay is the addition of another area code to the same geographic region as an existing area code. There is more than one type of solution in these conditions however, the majority involve an Area Code Overlay. In some areas, the need for new numbers is so great that new area codes are being added. Because of this growth, we’re running out of telephone numbers.

In addition to growth in home and business telephones, there has also been an increase in wireless and other communication devices.

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