Area code 606: where it is and who calls from it
Area code 606 is in Kentucky.
Kentucky (Ashland, Pikeville, Hazard, Somerset, London, Corbin, Maysville, and much of eastern Kentucky)
| Where | Kentucky |
|---|---|
| Time zone | Eastern and Central Time ยท local time |
| In service since | 1955 |
| Overlay | No |
| Prefixes assigned | 639 of 792 possible (81%) |
Where 606 numbers started
Every prefix is assigned to a rate center, the local calling area it was set up in. These are the biggest in 606, with how many prefixes each has.
Plus 65 smaller rate centers.
Who holds 606 numbers
- Mobile carrier 34%
- Local phone company 30%
- Internet / business phone carrier 31%
- Phone company 6%
| Carrier | Type | Prefixes | Share |
|---|---|---|---|
| AT&T Mobility | Mobile carrier | 95 | 15% |
| Onvoy | Internet / business phone carrier | 91 | 14% |
| Windstream Kentucky East, Inc. - Lexington | Local phone company | 74 | 12% |
| AT&T (local phone) | Local phone company | 55 | 9% |
| Verizon Wireless | Mobile carrier | 50 | 8% |
| Windstream Kentucky East, Inc. - London | Local phone company | 43 | 7% |
| Appalachian Wireless | Mobile carrier | 42 | 7% |
| Level 3 (Lumen) | Internet / business phone carrier | 38 | 6% |
| T-Mobile (including Sprint) | Mobile carrier | 22 | 3% |
| Charter / Spectrum | Internet / business phone carrier | 19 | 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: Kentucky.
Other area codes in Kentucky
Got a call from 606?
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 606 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.