What is the overlay method of area code relief?
An area code overlay occurs when more than one area code serves the same geographic area. The new area code operates within the same geographic area as the old area code requiring relief. With an overlay, all current customers keep their same area code and telephone number. Numbers from the new area code may be assigned to new telephone customers or those adding additional lines.
Related Questions
- How will customers with a 918 or 539 area code need to dial calls after the Oklahoma 918 / 539 Area Code Overlay change?
- What is the difference between the "overlay" and a "geographic split" method of adding a new area code?
- What will remain the same after the Oklahoma 918 / 539 Area Code Overlay change?