The Louisiana Public Service Commission (LPSC) announced the introduction of a new area code, 457, to provide relief for the 318 area code region. This overlay ensures sufficient telephone numbers are available to meet future demand while minimizing disruption for customers.
What is an Overlay? An overlay introduces a new area code to the same geographic region currently served by an existing area code. Customers with 318 area code numbers will retain their current numbers, but new phone lines or services activated after September 25, 2025, may receive the 457 area code. Importantly, customers will need to use a 10-digit dialing procedure—the area code plus the seven-digit phone number—to make local calls.
Key Dates for the Transition:
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February 24, 2025: Begin using 10-digit dialing (area code + 7-digit number) for all local calls. Calls made with 7 digits will still be completed during this period.
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August 25, 2025: 10-digit dialing becomes mandatory. Calls dialed with only 7 digits will not go through and will receive a recorded message to redial with the area code.
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September 25, 2025: New numbers in the 457 area code may be assigned.
Why is This Change Necessary? The North American Numbering Plan Administrator (NANPA) forecasts that the 318 area code will run out of new numbers by early 2026. The LPSC reviewed NANPA’s recommendations, sought public and industry input, and approved the overlay to address the shortage.
The 318 area code serves the parishes of: Allen, Avoyelles, Bienville, Bossier, Caddo, Caldwell, Catahoula, Claiborne, Concordia, De Soto, East Carroll, Franklin, Grant, Jackson, La Salle, Lincoln, Madison, Morehouse, Natchitoches, Ouachita, Rapides, Red River, Richland, Sabine, Tensas, Union, Vernon, Webster, West Carroll, and Winn.
What You Need to Know:
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Current Numbers Stay the Same: If you already have a 318 number, it will not change.
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Mandatory 10-Digit Dialing: All local calls within the 318 and 457 areas will require 10 digits.
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No Change in Call Costs: Local calls will remain local, even with the added area code.
For more information, visit the Louisiana Public Service Commission website or contact your telephone service provider. The LPSC remains committed to ensuring a smooth transition and reliable communication services for all residents and businesses in northern Louisiana.
See Original Louisiana Public Service Commission notice below:
