Mississippi area codes
Mississippi uses 5 area codes. The oldest is 601, in service since 1947; the newest is 471, from 2026. Across them 2,069 of 3,930 possible number blocks are allocated, 52.6% of capacity. 601 and 662 are at or past 95%, which is why new numbers there come from overlays rather than the original code. AT&T holds 38.0% of the 2,069 assigned blocks across the state, ahead of Verizon at 9.9%; a further 22.1% sits with CLEC and VoIP holders outside the national carriers. In the 33 days to 30 October 2026, FTC complaints named a Mississippi caller ID 1,776 times – 0.8% of all complaints in the window, most often 601 with 804 (97th of 422 nationally). NANPA records 325 rate centers across the state's codes.
All 5 codes
| Code | In service | Blocks used | Largest holder | Complaints | Shares area with |
|---|---|---|---|---|---|
| 228 | 1997 | 275/786 | AT&T 36.4% | 410 | no overlay |
| 471 | 2026 | 0/786 | – | – | 662 |
| 601 | 1947 | 783/786 | AT&T 42% | 804 | 769 |
| 662 | 1999 | 756/786 | AT&T 36.5% | 415 | 471 |
| 769 | 2005 | 255/786 | AT&T 32.2% | 147 | 601 |
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 Mississippi’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
471 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: 2,069 blocks, each with the holder NANPA recorded for it. Percentages are measured, not estimated.
| Holder | Blocks | Share of Mississippi | Largest in |
|---|---|---|---|
| AT&T | 787 | 38% | 4 codes |
| Other CLEC / VoIP | 457 | 22.1% | – |
| Verizon | 204 | 9.9% | – |
| Lumen | 171 | 8.3% | – |
| T-Mobile | 100 | 4.8% | – |
| Onvoy | 99 | 4.8% | – |
| Bandwidth | 92 | 4.4% | – |
| Windstream | 79 | 3.8% | – |
| Charter | 24 | 1.2% | – |
| Comcast | 15 | 0.7% | – |
| Spok | 10 | 0.5% | – |
| Brightspeed | 8 | 0.4% | – |
“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 Mississippi codes
FTC Do Not Call complaints where the caller ID shown was a Mississippi 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 Mississippi got its codes
1 in the 1940s, 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 601 goes into service.
- 1997 228 goes into service, split from or overlaid on 601.
- 1999 662 goes into service, split from or overlaid on 601.
- 2005 769 goes into service, split from or overlaid on 601.
- 2026 471 goes into service, split from or overlaid on 662.
Time zones
Mississippi is in Central time.
Frequently asked about Mississippi area codes
How many area codes does Mississippi have?
5 in service. They are 228, 471, 601, 662 and 769.
What is the oldest area code in Mississippi?
601, 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 Mississippi?
471, from 2026, overlaying 662.
Is Mississippi running out of numbers?
601 and 662 are at or past 95% of capacity, but NANPA has not opened relief planning for them, so no new code is announced.
What time zone is Mississippi in?
Central time.
Which Mississippi area code gets the most spam complaints?
601 – 804 FTC complaints in the 33 days to 30 October 2026, 97th 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 Mississippi numbers?
AT&T, with 38.0% of the 2,069 blocks assigned across Mississippi, ahead of Other CLEC / VoIP at 22.1%. 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.