Phone numbers in Jonesborough, Tennessee
Jonesborough has 4 phone prefixes in area code 423.
Biggest holders: CenturyLink / Lumen, Onvoy. This is the local calling area (rate center) where those prefixes were first assigned.
- Local phone company 75%
- Internet / business phone carrier 25%
Every prefix in Jonesborough
Search the first six digits of a number in this list. If it's here, the number started in Jonesborough with the carrier shown. If it isn't, check the Tennessee page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 423-753 | CenturyLink / Lumen | Local phone company | – |
| 423-788 | CenturyLink / Lumen | Local phone company | – |
| 423-850 | Onvoy | Internet / business phone carrier | 2018 |
| 423-913 | CenturyLink / Lumen | Local phone company | – |
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. Source: NANPA central office code records, 2026-10-10.