457 area code
Where the 457 area code is, its overlay and how to dial a +1 457 number from anywhere.
The 457 area code is in Louisiana, United States (Central (CT)). To call from abroad: +1 457 555-0123. It is an overlay, so all 10 digits are dialled.
The 457 area code is a geographic North American Numbering Plan (NANP) code covering Louisiana. It has been in service since 09-May-2023 and sits in the Central (CT) time zone.
How to dial a 457 number
+1 457 555-01231 457 555-0123457 555-0123Other Louisiana area codes
Frequently asked questions
Where is the 457 area code?
The 457 area code is in Louisiana, United States (Central (CT)).
Is 457 an overlay area code?
Yes. 457 overlays the same region as 318, so callers dial all 10 digits.
Do I have to dial 10 digits for 457?
Yes — dial the area code plus the seven-digit number.
How do I call a 457 number from another country?
Dial your exit code (or +), then 1, then 457, then the number: +1 457 555-0123.
Source: NANPA numbering plan. An area code covers a region, not a precise address — a 457 number does not pinpoint a street or ZIP code.
Number holders in area code 457
Each prefix (the three digits after the area code) is assigned by NANPA to one telephone company. 14 prefixes are in use in 457, shared by 1 companies. The largest holders:
| Company | Prefixes | Share |
|---|---|---|
| Multiple Ocn Listing | 14 | 100% |
Source: NANPA central office code assignments. A number keeps its original prefix when it is ported to another carrier.
All US area codes United States +1 Map of area code 457 — cities & rate centres