Phone numbers in Bluff City, Tennessee
Bluff City has 5 phone prefixes in area code 423.
Biggest holders: CenturyLink / Lumen, Bristol Tennessee Essential Services, Bandwidth. This is the local calling area (rate center) where those prefixes were first assigned.
- Local phone company 40%
- Internet / business phone carrier 40%
- Phone company 20%
Every prefix in Bluff City
Search the first six digits of a number in this list. If it's here, the number started in Bluff City with the carrier shown. If it isn't, check the Tennessee page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 423-391 | CenturyLink / Lumen | Local phone company | – |
| 423-538 | CenturyLink / Lumen | Local phone company | – |
| 423-575 | Bristol Tennessee Essential Services | Phone company | 2006 |
| 423-712 | Bandwidth | Internet / business phone carrier | 2015 |
| 423-786 | Onvoy | Internet / business phone carrier | 2023 |
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.