Area code 660: where it is and who calls from it
Area code 660 is in Missouri.
Missouri (Sedalia, Kirksville, Maryville, Mexico, Whiteman Air Force Base, and a part of north-central Missouri)
| Where | Missouri |
|---|---|
| Time zone | Central Time ยท local time |
| In service since | 1997 |
| Overlay | No |
| Prefixes assigned | 516 of 792 possible (65%) |
Where 660 numbers started
Every prefix is assigned to a rate center, the local calling area it was set up in. These are the biggest in 660, with how many prefixes each has.
Plus 164 smaller rate centers.
Who holds 660 numbers
- Mobile carrier 20%
- Local phone company 40%
- Internet / business phone carrier 28%
- Phone company 12%
| Carrier | Type | Prefixes | Share |
|---|---|---|---|
| Level 3 (Lumen) | Internet / business phone carrier | 63 | 12% |
| CenturyLink / Lumen | Local phone company | 47 | 9% |
| Onvoy | Internet / business phone carrier | 42 | 8% |
| AT&T (local phone) | Local phone company | 40 | 8% |
| Grand River Mutual Tel | Local phone company | 36 | 7% |
| AT&T Mobility | Mobile carrier | 34 | 7% |
| Verizon Wireless | Mobile carrier | 32 | 6% |
| T-Mobile (including Sprint) | Mobile carrier | 25 | 5% |
| Windstream Missouri | Local phone company | 23 | 4% |
| Chariton Valley Tel | Phone company | 18 | 3% |
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.
States served: Missouri.
Other area codes in Missouri
235 314 417 557 573 636 816 975
Got a call from 660?
An area code tells you where a number was first assigned, not where the caller is. People keep their numbers when they move, and scammers can fake any number. If you weren't expecting the call, let it go to voicemail.
If the call shows a 660 number that matches the first six digits of your own, that's often neighbor spoofing. Use the box above to check the full number.
Area code facts from the NANPA area code database (updated 10/06/2026); prefixes and carriers from NANPA's central office code records (updated 2026-10-10). Place description adapted from Wikipedia, CC BY-SA 4.0.