Area code 337

Where area code 337 is

NANPA lists 337 as an in-service geographic area code for Louisiana, first put into service on October 11, 1999. It is not part of an overlay, so every number in its territory starts with 337. It is in the Central time zone. The places with the most assigned exchanges include Lafayette, Lake Charles, New Iberia, Leesville, and Opelousas. By population, its largest named places are Lafayette, Lake Charles, New Iberia, Sulphur, and Youngsville.

Where 337 numbers are local

337 holds 21% of the 2,874 central office codes assigned in Louisiana, the 2nd most of the state's 6 codes. 55 Census places could be matched to rate centers with 337 exchanges; the most populous are Lafayette (122,000), Lake Charles (81,157), New Iberia (26,849), and Sulphur (20,572). Each place page lists the exact prefixes and carriers for that town.

Ten-digit and seven-digit dialing in 337

According to NANPA's dialing-plan data, local calls within 337 are dialed as ten digits (area code plus number) and toll calls as 1 plus ten digits. Because local calls need the area code, business cards, signage and website copy should always show the full ten-digit number. NANPA's dialing-plan note for this code reads: "1+10 digit permissible at service provider discretion."

Who holds 337 exchanges

50 carriers hold the 599 central office codes assigned in 337. Bellsouth Telecomm INC d/b/a South Central Bell Tel has the most, with 139 (23%). 428 of the codes (71%) are pooled, meaning the code holder shares blocks of 1,000 numbers with other carriers instead of using all 10,000 itself. The code holder is not necessarily the carrier serving a given number today, since numbers can be ported between providers.

Local calling areas in 337

NANPA assigns each central office code to a rate center, the local calling area that decides whether a call is local or toll. 337 has codes in 75 rate centers. Rate center names in the file are abbreviations; where one matches a Census place, the table links to that city's local-number page.

Number supply in 337

An area code has 800 possible central office codes that start with 2 through 9, a few of which are reserved (such as N11 service codes and 555). 599 are assigned in 337, 75% of 800. 64 were assigned in 2020 or later.

Getting a 337 number for your business

Callata Office costs $99 per month for up to 5 people, and each additional user is $20 a month. That covers up to 3 local numbers, calling from a browser or your cell, transcribed voicemail, recorded calls with AI summaries, after-hours routing and E911 on each number.

Porting a number you already use in area code 337 is free, and business texting is available once the carrier registration (10DLC) is approved; the registration carries a one-time $49 fee. Which specific numbers are open in a given area code depends on carrier inventory at the time you sign up.

AI agents are optional: an AI receptionist or scheduler can pick up when the team is busy or closed, take a message, send a text or email, or transfer the call. They draw on prepaid AI minutes ($0.25/minute), disclose that they are AI, and outbound AI calls require prior consent and are limited to 8am–9pm.