Phone numbers in New Iberia, Louisiana
New Iberia has 28 phone prefixes in area code 337.
Biggest holders: AT&T (local phone), AT&T Mobility, MetroPCS (T-Mobile). This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 36%
- Local phone company 29%
- Internet / business phone carrier 32%
- Phone company 4%
Every prefix in New Iberia
Search the first six digits of a number in this list. If it's here, the number started in New Iberia with the carrier shown. If it isn't, check the Louisiana page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 337-201 | MetroPCS (T-Mobile) | Mobile carrier | – |
| 337-209 | Advanced Tel | Phone company | – |
| 337-251 | MetroPCS (T-Mobile) | Mobile carrier | 2001 |
| 337-253 | Comcast | Internet / business phone carrier | – |
| 337-256 | AT&T Mobility | Mobile carrier | 2001 |
| 337-321 | AT&T Mobility | Mobile carrier | 2002 |
| 337-335 | MetroPCS (T-Mobile) | Mobile carrier | 2003 |
| 337-352 | Verizon Wireless | Mobile carrier | 2003 |
| 337-359 | AT&T (local phone) | Local phone company | – |
| 337-364 | AT&T (local phone) | Local phone company | – |
| 337-365 | AT&T (local phone) | Local phone company | – |
| 337-367 | AT&T (local phone) | Local phone company | – |
| 337-369 | AT&T (local phone) | Local phone company | – |
| 337-373 | AT&T (local phone) | Local phone company | – |
| 337-374 | AT&T (local phone) | Local phone company | – |
| 337-376 | Level 3 (Lumen) | Internet / business phone carrier | 2003 |
| 337-380 | AT&T Mobility | Mobile carrier | – |
| 337-465 | Level 3 (Lumen) | Internet / business phone carrier | 2002 |
| 337-492 | Windstream (PAETEC) | Internet / business phone carrier | – |
| 337-519 | AT&T Mobility | Mobile carrier | – |
| 337-547 | Onvoy | Internet / business phone carrier | 2021 |
| 337-551 | Teleport Communications America La | Internet / business phone carrier | 2008 |
| 337-560 | AT&T (local phone) | Local phone company | – |
| 337-577 | AT&T Mobility | Mobile carrier | – |
| 337-606 | Windstream (PAETEC) | Internet / business phone carrier | – |
| 337-608 | Windstream (PAETEC) | Internet / business phone carrier | – |
| 337-818 | Onvoy | Internet / business phone carrier | 2024 |
| 337-967 | AT&T Mobility | Mobile carrier | – |
Most prefixes are pooled: the 10,000 numbers in each are handed out in blocks of 1,000 to different carriers, and people can also take their numbers to another carrier. So the carrier shown is where the prefix started, not a guarantee about any one number. Source: NANPA central office code records, 2026-10-10.