Area code 620 – Kansas
620 has served Kansas since 2001, split from 316. 705 of its 786 number blocks are allocated – about 90% full. Other CLEC / VoIP is the largest holder with 36.3% of blocks, ahead of AT&T at 27.1%. 833 FTC complaints named a 620 caller ID in the 33 days to 30 October 2026, putting it 88th of 422 codes with five or more complaints. Numbers are spread across 257 rate centers, which is typical of a mostly rural code.
- State
- Kansas
- In service since
- 2001
- Time zone
- Central, Mountain
- Shares area with
- No overlay
Who holds 620 number blocks
Share of the 705 assigned NXX blocks (89.7% of the 786 possible), across 76 carriers. This is share of number blocks, not of subscribers.
- Other CLEC / VoIP38.3%
- AT&T27.1%
- Lumen14.3%
- Verizon8.5%
- Onvoy4.3%
- T-Mobile3.5%
- Consolidated1%
- Comcast0.7%
- Bandwidth0.7%
- Peerless0.6%
- Charter0.6%
- Telnyx0.3%
- Dish0.1%
Spam complaints naming 620
FTC Do Not Call complaints where the caller ID was a 620 number, 28 Sep – 30 Oct 2026 (33 days). Caller IDs on spam calls are frequently spoofed, so these are complaints about the code, not calls proven to originate in it.
Rate centers in 620
NANPA allocates number blocks to rate centers and records their names abbreviated to ten characters, so these are NANPA's codes rather than place names – CHAMPAURBN is Champaign-Urbana, NWYRCYZN01 is a New York City zone. We show them unchanged instead of guessing at the full names. Showing the largest 5 of 257.
Timeline
- 2001 620 goes into service, split from or overlaid on 316.
More about 620
Separate pages for the questions that need their own answer: what time it is there, what the complaint data says, who holds the number blocks, and how the code compares with the one it shares its area with.
Frequently asked about 620
What state is area code 620?
Kansas.
Is a call from 620 a scam?
Not by itself. 620 drew 833 FTC complaints in the 33 days to 30 October 2026, 88th of 422 ranked codes – mid-pack or lower. Spam callers spoof caller IDs, so the only useful check is the full number.
Which carrier owns 620 numbers?
Other CLEC / VoIP holds the largest share of assigned number blocks at 36.3%. The rest is spread across 3 other carriers. This is share of number blocks, not of subscribers – people keep their numbers when they switch carriers.
Do I need to dial 10 digits in 620?
Yes – ten digits for local calls in 620, because it shares its area with another code.
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, 25 daily files 28 Sep – 30 Oct 2026, retrieved Nov 1, 2026
NANPA dialing note for this code: “10D”. Reviewed by the data desk. Spotted an error? Request a correction.