337 Area Code: Lafayette, Louisiana
Area code 337 serves Lafayette, Lake Charles and New Iberia, Louisiana in the Central time zone, in service since 1999. Consumers have filed 2,352 unwanted-call complaints against 1,948 different 337 numbers, 355 of them with the FTC in the last 30 days. Look up the exact number that called you below.
Area code 337 at a glance
- State
- Louisiana
- Main cities
- Lafayette, Lake Charles, New Iberia, Leesville, Opelousas, Abbeville + 69 more
- Counties
- Lafayette Parish, Calcasieu Parish, St. Landry Parish, Iberia Parish + 10 more
- Local time
- —Central
- In service since
- October 11, 1999
- Split from
- 318
- Local dialing
- 10 digits (area code + number)
- Exchanges
- 75 rate centers, 599 prefixes
Sources: NANPA area code and central office code records (refreshed weekly); cities and counties matched from US Census Bureau and USGS place names.
Most-reported 337 numbers
Ranked by FTC Do Not Call complaints this month, then all-time FTC and FCC complaints. Only numbers with enough complaints for a full report page are listed. Click one for what it was reported for and where.
What calls from 337 numbers are about
993 FTC Do Not Call complaints about 337 numbers since Jul 24. The most common named subject is debt-relief pitches, at 18% of complaints (83% of those were recorded messages). Overall, 73% of callers who answered said the call was a robocall.
FTC complaint subjects
- Other / unspecified38939%
- Debt reduction18218%
- Impostor (government, business, family)12212%
- Medical & prescriptions10811%
- Dropped call / no message818%
- No subject given636%
- Warranties & protection plans293%
FCC complaints by call type, last 2 years
- Prerecorded Voice7449%
- Live Voice6442%
- Text Message149%
Live-voice calls are from a person; prerecorded calls are robocalls.
When 337 spam calls come in
31% of complaints that give a call time describe calls between 9am and 12pm. 94% came Monday to Friday, most on Tuesdays, the pattern of call-center robocall campaigns that run on business hours. Times are as consumers reported them to the FTC.
By hour of the day
By day of the week
Is it getting worse?
384 FTC complaints about 337 numbers in the last four weeks, up 23% on the four weeks before. FCC complaints about 337 numbers peaked in 2017 (259); the FTC's daily Do Not Call data has carried most of the volume since mid-2026.
FTC complaints per week
FCC complaints per year
Years shown as '15 to '26; the current year is partial.
Who gets these calls
50% of the FTC complaints about 337 numbers came from people whose own phone number also starts with 337, and 60% from Louisiana. Calls that look local to the person receiving them are the signature of neighbor spoofing: robocallers display a number from your own area code because you're more likely to answer.
Where complainants live
- Louisiana59760%
- Texas576%
- California374%
- Florida364%
- New York242%
What people with 337 numbers report
People whose own number starts with 337 filed 1,365 FTC complaints since Jul 24. 36% were about calls showing another 337 number. The most common named subject was debt-relief pitches.
Area codes on the calls they reported
- 337 (same code)49336%
- 833 (toll-free)705%
- 888 (toll-free)584%
- 855 (toll-free)534%
- 877 (toll-free)524%
Busiest 337 prefixes this month
FTC complaints in the last 30 days, grouped by the first six digits. When one prefix collects complaints about many different numbers, a campaign is usually cycling through that block. The carrier is who NANPA assigned the prefix to, not who made the calls.
| Prefix | Complaints | Numbers | Carrier | Exchange |
|---|---|---|---|---|
| (337) 539-xxxx | 13 | 12 | Onvoy (Sinch) | Gueydan |
| (337) 999-xxxx | 9 | 9 | Bandwidth.com | Broussard |
| (337) 548-xxxx | 9 | 9 | MCImetro (Verizon Business) | Lake Arthur |
| (337) 471-xxxx | 9 | 9 | At&T Enterprises, LLC | Franklin |
| (337) 579-xxxx | 8 | 8 | AT&T Mobility (New Cingular Wireless PCS) | Jeanerette |
Carriers operating in 337
NANPA has assigned 599 337 prefixes (NPA-NXX central-office codes) across 75 rate centers: 34% to wireless carriers, 64% to landline and VoIP operators; 71% are pooled blocks shared by several carriers. 3 prefixes were assigned in the last 12 months (newest 2026-03-27). The carrier holding a prefix is who the number was issued through. It says nothing about who is calling, since caller ID is routinely spoofed.
| Carrier | Type | Prefixes | Rate centers | Newest assignment |
|---|---|---|---|---|
| BellSouth (AT&T) | Incumbent landline (ILEC) | 139(23%) | 35 | 2013-11-08 |
| AT&T Mobility (New Cingular Wireless PCS) | Wireless | 98(16%) | 27 | 2024-12-30 |
| Verizon Wireless (Cellco Partnership) | Wireless | 53(9%) | 31 | 2021-02-10 |
| PAETEC (Windstream) | Competitive / VoIP (CLEC) | 34(6%) | 20 | 2022-03-30 |
| Brightspeed of Louisiana, LLC | Incumbent landline (ILEC) | 33(6%) | 29 | 2007-10-30 |
| Onvoy (Sinch) | Competitive / VoIP (CLEC) | 28(5%) | 22 | 2024-07-03 |
| Level 3 (Lumen) | Competitive / VoIP (CLEC) | 24(4%) | 14 | 2020-04-06 |
| Metro by T-Mobile (MetroPCS) | Wireless | 24(4%) | 14 | 2005-09-02 |
| Comcast (Xfinity Voice) | Competitive / VoIP (CLEC) | 22(4%) | 18 | 2017-12-14 |
| Voicestream Gsm I, LLC | Wireless | 19(3%) | 11 | 2023-10-05 |
| Ton80 Communications, LLC | Competitive / VoIP (CLEC) | 13(2%) | 13 | 2022-02-24 |
| Teleport Communications America La - LLC | Competitive / VoIP (CLEC) | 10(2%) | 5 | 2026-03-18 |
Largest rate centers (exchanges) by prefixes: Lafayette (130), Lake Charles (80), New Iberia (28), Leesville (22), Opelousas (21), Abbeville (18), Crowley (15), Sulphur (15), DeRidder (13), Broussard (10). Source: NANPA Central Office Code Utilized Assignments (public, refreshed weekly).
What to do about calls from 337 numbers
Before you call back
- Debt reduction is the top named complaint here. Don't pay upfront fees for debt relief; the FTC's Telemarketing Sales Rule bans them. Talk to your lender or a nonprofit credit counselor instead. Read about debt-relief robocalls.
- Look up the full number above. A missed call from 337 with no voicemail is usually a robocall; anyone who needs you will leave a message.
- If it looks like a neighbor's number, it may be spoofed. See calls from your own area code.
- Block repeat callers: iPhone, Android, or your carrier's free filter (Verizon, AT&T, T-Mobile).
Report it in Louisiana
- Unwanted sales calls and robocalls: donotcall.gov (FTC). Scams and fraud: ReportFraud.ftc.gov.
- Spoofing, texts and call-blocking problems: FCC consumer complaints.
- State complaints: Louisiana Attorney General.
- Louisiana is one of the states that maintains its own Do Not Call registry alongside the federal National Do Not Call Registry, so telemarketers calling Louisiana numbers are expected to check both lists. Registering on the federal list at donotcall.gov is free and never expires; the state list is administered separately and may have its own registration process and renewal period.
Your FTC and FCC reports are published (without your name or number) in the datasets this page is built from. How to report unwanted calls.
Area code 337: questions answered from the data
Where is area code 337?
Area code 337 serves Lafayette, Lake Charles and New Iberia, Louisiana, covering Lafayette Parish, Calcasieu Parish and St. Landry Parish and 11 more counties. It has been in service since October 11, 1999. It was split from area code 318.
What time zone is area code 337 in?
Area code 337 is in the Central time zone (UTC−6, or UTC−5 during daylight saving time). The current local time is shown at the top of this page.
What are calls from 337 numbers usually about?
Since Jul 24, consumers filed 993 FTC Do Not Call complaints about 337 numbers. The most common named subject was debt-relief pitches: 18% of complaints, 83% of them recorded messages. Across all subjects, 73% of callers who answered the question said the call was a robocall.
When do 337 spam calls happen?
31% of the complaints that give a call time describe calls between 9am and 12pm, and 94% came on weekdays, most often on Tuesday. Times are as consumers reported them.
Are calls from 337 numbers really local?
Not necessarily. 50% of the FTC complaints about 337 numbers came from people whose own phone number also starts with 337, and 60% from Louisiana. Calls that look local to the person receiving them are the signature of neighbor spoofing: robocallers display a number from your own area code because you're more likely to answer.
Are 337 robocalls increasing?
In the four weeks to Oct 15, consumers filed 384 FTC complaints about 337 numbers, 23% more than the four weeks before.
How do I report a 337 scam call in Louisiana?
Report unwanted sales calls and robocalls to the FTC at donotcall.gov, and scams to ReportFraud.ftc.gov. The FCC takes complaints at consumercomplaints.fcc.gov. In Louisiana, the Louisiana Attorney General also handles consumer complaints about scam calls. Reports feed the public data this page is built from.
Other Louisiana area codes
Sources: FTC Do Not Call complaints (unverified consumer reports), published every weekday and available here from Jul 24; FCC Consumer Complaint Data, public record, imported nightly; NANPA numbering records. A number appearing here means consumers reported calls that displayed it. Caller ID can be spoofed.