Phone numbers in Cumberland Gap, Tennessee
Cumberland Gap has 5 phone prefixes in area code 423.
Biggest holders: Verizon Wireless, T-Mobile (including Sprint), AT&T Mobility. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 80%
- Local phone company 20%
Every prefix in Cumberland Gap
Search the first six digits of a number in this list. If it's here, the number started in Cumberland Gap with the carrier shown. If it isn't, check the Tennessee page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 423-419 | Verizon Wireless | Mobile carrier | 2012 |
| 423-441 | T-Mobile (including Sprint) | Mobile carrier | 2003 |
| 423-489 | AT&T Mobility | Mobile carrier | 2004 |
| 423-801 | UScellular | Mobile carrier | 2007 |
| 423-869 | AT&T (local phone) | 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.