457 area code — Louisiana geographic
Area code 457 is a geographic code serving Louisiana in the Central time zone. It has been in service since September 25, 2025. It is part of the 318/457 overlay complex — these codes share the same territory. Note that porting and VoIP mean a 457 number can be used from anywhere — the code marks where the number was assigned.
457 was created from 318 in 2025.
NANPA projects numbering capacity for the 318/457 complex to exhaust in 3Q 2095.
Dialing: 10D locally, 10D to other codes (1+10 digit dialing permissible at service provider discretion).
To check where a specific 457 number was issued, look up its six-digit prefix; to check who is actually calling, ignore the display and verify through an official callback number — caller ID is assertable and routinely spoofed.
FAQ
Why do 318 and 457 cover the same place?
They are overlays: when a code runs low on numbers, a new code is added over the same territory instead of splitting it. The 318/457 complex shares one service area, and local calls are dialed with 10 digits.
Will 457 run out of numbers?
NANPA's current forecast projects exhaust in 3Q 2095 — decades of capacity remain.
Why am I getting spam calls from 457 numbers?
Scammers spoof real area codes so calls look legitimate. A displayed 457 number does not prove the call originated there — see our guide to spotting spoofed calls.