Kansas area codes
Kansas uses 4 area codes. The oldest is 316, in service since 1947; the newest is 620, from 2001. Across them 2,305 of 3,144 possible number blocks are allocated, 73.3% of capacity. AT&T holds 32.2% of the 2,305 assigned blocks across the state, ahead of Lumen at 12.0%; a further 27.0% sits with CLEC and VoIP holders outside the national carriers. In the 33 days to 30 October 2026, FTC complaints named a Kansas caller ID 2,973 times – 1.3% of all complaints in the window, most often 785 with 886 (64th of 422 nationally). The state spans 2 time zones (Central and Mountain); 620 and 785 cross a zone boundary alone. NANPA records 574 rate centers across the state's codes.
All 4 codes
| Code | In service | Blocks used | Largest holder | Complaints | Shares area with |
|---|---|---|---|---|---|
| 316 | 1947 | 341/786 | AT&T 46.6% | 682 | no overlay |
| 620 | 2001 | 705/786 | Other CLEC / VoIP 38.3% | 833 | no overlay |
| 785 | 1997 | 726/786 | Other CLEC / VoIP 36.5% | 886 | no overlay |
| 913 | 1947 | 533/786 | AT&T 39.6% | 572 | 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 Kansas’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.
Who holds the number blocks
Counted from every assigned block in the state: 2,305 blocks, each with the holder NANPA recorded for it. Percentages are measured, not estimated.
| Holder | Blocks | Share of Kansas | Largest in |
|---|---|---|---|
| AT&T | 743 | 32.2% | 2 codes |
| Other CLEC / VoIP | 622 | 27% | 2 codes |
| Lumen | 276 | 12% | – |
| T-Mobile | 194 | 8.4% | – |
| Verizon | 171 | 7.4% | – |
| Onvoy | 119 | 5.2% | – |
| Windstream | 39 | 1.7% | – |
| Comcast | 28 | 1.2% | – |
| Bandwidth | 24 | 1% | – |
| Charter | 20 | 0.9% | – |
| Peerless | 17 | 0.7% | – |
| Consolidated | 14 | 0.6% | – |
“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 Kansas codes
FTC Do Not Call complaints where the caller ID shown was a Kansas 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 Kansas got its codes
2 in the 1940s, 1 in the 1990s, 1 in the 2000s. Each code after the first was split off from or overlaid on one already in service.
- 1947 316 goes into service.
- 1947 913 goes into service.
- 1997 785 goes into service, split from or overlaid on 913.
- 2001 620 goes into service, split from or overlaid on 316.
Time zones
Kansas is in Central, Mountain time. 620, 785 cover more than one zone within a single area code, so the code alone does not tell you what time it is there. This code spans 2 time zones.
Frequently asked about Kansas area codes
How many area codes does Kansas have?
4 in service. They are 316, 620, 785 and 913.
What is the oldest area code in Kansas?
316, 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 Kansas?
620, from 2001, overlaying 316.
What time zone is Kansas in?
It spans 2: Central and Mountain. 620 and 785 cover more than one zone within a single area code, so the code alone does not tell you the time.
Which Kansas area code gets the most spam complaints?
785 – 886 FTC complaints in the 33 days to 30 October 2026, 64th 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 Kansas numbers?
AT&T, with 32.2% of the 2,305 blocks assigned across Kansas, ahead of Other CLEC / VoIP at 27.0%. 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.