Area code 457

About area code 457

NANPA lists 457 as an in-service geographic area code for Louisiana, first put into service on September 25, 2025. It is an overlay: 457 and 318 cover the same territory, so neighbors on the same street can have different area codes. It is in the Central time zone.

Ten-digit and seven-digit dialing in 457

According to NANPA's dialing-plan data, local calls within 457 are dialed as ten digits (area code plus number) and toll calls as 1 plus ten digits. Ten-digit local dialing means the area code is part of how customers save and recognize your number, so print it in full everywhere. NANPA's dialing-plan note for this code reads: "1+10 digit dialing permissible at service provider discretion"

A new code in an overlay

NANPA's utilized-code file dated 10/01/2026 lists no central office codes assigned in 457 yet. NANPA assigned the code on May 9, 2023 and put it in service on September 25, 2025. In an overlay, numbers for the shared territory keep coming from the older code (318) until carriers start drawing codes from 457, so a business phone number requested here today will most likely carry 318.

318 has been in service since January 1, 1957 and has 764 assigned codes held by 53 carriers across 119 rate centers. Its largest code holders are Bellsouth Telecomm INC d/b/a South Central Bell Tel (208), New Cingular Wireless PCS, LLC - Ga (110), and Cellco Partnership d/b/a Verizon Wireless - La (78). Its most populous matched places are Shreveport (177,000), Monroe (46,622), Alexandria (43,133), and Ruston (22,330).

An overlay leaves existing numbers unchanged and adds a second code for new numbers in the same territory. Local calls there need all ten digits, so businesses should print their full number everywhere.

Places in the 457/318 territory

99 Census places are matched to rate centers with exchanges in 318, the code 457 overlays. The most populous are Shreveport (177,000), Monroe (46,622), Alexandria (43,133), and Ruston (22,330). Their pages list the prefixes and carriers that serve each town today; numbers from 457 will appear alongside them as carriers draw new codes.

A local 457 number on Callata

For $99 a month, Callata puts a team of up to 5 on one plan ($20 for each person after that): up to 3 local numbers, unlimited inbound calls, a pooled allowance of 1,500 outbound US and Canada minutes per user, browser and cell calling, voicemail transcription with urgency triage, recorded calls with AI summaries and business-hours routing, with E911 on every number.

If you already have a number in area code 457, porting it to Callata is free. Texting from a local number requires a one-time carrier registration (10DLC, $49), and the numbers available in any area code depend on carrier inventory when you choose them.

Optional AI agents (receptionist, sales, support or scheduler) can answer calls after hours or when nobody picks up, take messages, text, email and transfer to your team. They are billed from prepaid AI minutes at $0.25 per minute, identify themselves as AI, and may only place outbound calls to people who consented, between 8am and 9pm.