Louisiana area codes
Louisiana uses 6 area codes. The oldest is 504, in service since 1947; the newest is 457, from 2025. Across them 2,875 of 4,716 possible number blocks are allocated, 61.0% of capacity. 318 is at or past 95%, which is why new numbers there come from overlays rather than the original code. AT&T holds 44.6% of the 2,875 assigned blocks across the state, ahead of Verizon at 8.5%; a further 17.1% sits with CLEC and VoIP holders outside the national carriers. In the 33 days to 30 October 2026, FTC complaints named a Louisiana caller ID 3,535 times – 1.6% of all complaints in the window, most often 318 with 956 (47th of 422 nationally). NANPA records 280 rate centers across the state's codes.
All 6 codes
| Code | In service | Blocks used | Largest holder | Complaints | Shares area with |
|---|---|---|---|---|---|
| 225 | 1998 | 501/786 | AT&T 46.1% | 842 | no overlay |
| 318 | 1957 | 765/786 | AT&T 44.3% | 956 | 457 |
| 337 | 1999 | 599/786 | AT&T 41.9% | 551 | no overlay |
| 457 | 2025 | 0/786 | – | – | 318 |
| 504 | 1947 | 563/786 | AT&T 49% | 403 | no overlay |
| 985 | 2001 | 447/786 | AT&T 41.4% | 783 | no overlay |
Block share is share of allocated number blocks, not of subscribers. Complaint counts cover 28 Sep – 30 Oct 2026 and reflect spoofed caller IDs as much as real calls.
How full Louisiana’s codes are
A code holds at most 786 blocks of 10,000 numbers each. When a code fills up, the administrator does not reclaim numbers – it adds an overlay, and from then on new numbers in the same area come from the new code.
Full or nearly full
457 is in service with no blocks assigned at all, so nobody can hold a number there yet – a caller ID showing one is necessarily spoofed.
Who holds the number blocks
Counted from every assigned block in the state: 2,875 blocks, each with the holder NANPA recorded for it. Percentages are measured, not estimated.
| Holder | Blocks | Share of Louisiana | Largest in |
|---|---|---|---|
| AT&T | 1,282 | 44.6% | 5 codes |
| Other CLEC / VoIP | 492 | 17.1% | – |
| Verizon | 243 | 8.5% | – |
| Onvoy | 171 | 5.9% | – |
| Lumen | 161 | 5.6% | – |
| Windstream | 124 | 4.3% | – |
| T-Mobile | 84 | 2.9% | – |
| Brightspeed | 71 | 2.5% | – |
| Comcast | 64 | 2.2% | – |
| Bandwidth | 51 | 1.8% | – |
| Charter | 48 | 1.7% | – |
| Spok | 48 | 1.7% | – |
“Other CLEC / VoIP” is not one company: it is every holder outside the national carriers counted together, which is what resellers and app-based numbers look like in the records. This is allocation, not subscribers.
Spam complaints naming Louisiana codes
FTC Do Not Call complaints where the caller ID shown was a Louisiana number, 28 Sep – 30 Oct 2026 (33 days). Caller IDs on spam calls are routinely faked, so these are complaints about the code, not calls proven to come from it.
How Louisiana got its codes
1 in the 1940s, 1 in the 1950s, 2 in the 1990s, 1 in the 2000s, 1 in the 2020s. Each code after the first was split off from or overlaid on one already in service.
- 1947 504 goes into service.
- 1957 318 goes into service.
- 1998 225 goes into service, split from or overlaid on 504.
- 1999 337 goes into service, split from or overlaid on 318.
- 2001 985 goes into service, split from or overlaid on 504.
- 2025 457 goes into service, split from or overlaid on 318.
Time zones
Louisiana is in Central time.
Frequently asked about Louisiana area codes
How many area codes does Louisiana have?
6 in service. They are 225, 318, 337, 457, 504 and 985.
What is the oldest area code in Louisiana?
504, in service since 1947. Every later code in the state was split off from or overlaid on an existing one.
What is the newest area code in Louisiana?
457, from 2025, overlaying 318.
Is Louisiana running out of numbers?
318 is at or past 95% of capacity, but NANPA has not opened relief planning for it, so no new code is announced.
What time zone is Louisiana in?
Central time.
Which Louisiana area code gets the most spam complaints?
318 – 956 FTC complaints in the 33 days to 30 October 2026, 47th of 422 codes nationally. Those are complaints about the caller ID shown, and spam callers routinely fake a local-looking number, so this says the code is imitated often, not that the calls come from there.
Which carrier holds the most Louisiana numbers?
AT&T, with 44.6% of the 2,875 blocks assigned across Louisiana, ahead of Other CLEC / VoIP at 17.1%. This is allocation of blocks by the numbering administrator, not a count of subscribers – people keep their numbers when they switch carriers.
Sources and verification
- NANPA – NPA Database (npa_report.csv), file date 11/01/2026, retrieved Nov 1, 2026
- NANPA – CO Code Assignment Records, All States (utilized), file updated 11/01/2026, retrieved Nov 1, 2026
- FTC – Do Not Call Reported Calls Data, 28 Sep – 30 Oct 2026, retrieved Nov 1, 2026
Figures on this page are counted from those files, not copied from other sites. Spotted an error? Request a correction. How we collect and check: methodology.