Phone numbers in Elizabethton, Tennessee
Elizabethton has 13 phone prefixes in area code 423.
Biggest holders: T-Mobile (including Sprint), AT&T Mobility, CenturyLink / Lumen. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 54%
- Local phone company 23%
- Internet / business phone carrier 23%
Every prefix in Elizabethton
Search the first six digits of a number in this list. If it's here, the number started in Elizabethton with the carrier shown. If it isn't, check the Tennessee page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 423-213 | T-Mobile (including Sprint) | Mobile carrier | 2001 |
| 423-297 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 423-342 | AT&T Mobility | Mobile carrier | 2002 |
| 423-440 | Verizon Wireless | Mobile carrier | 2009 |
| 423-518 | T-Mobile (including Sprint) | Mobile carrier | 2012 |
| 423-542 | CenturyLink / Lumen | Local phone company | – |
| 423-543 | CenturyLink / Lumen | Local phone company | – |
| 423-547 | CenturyLink / Lumen | Local phone company | – |
| 423-576 | AT&T Mobility | Mobile carrier | 2023 |
| 423-666 | Onvoy | Internet / business phone carrier | 2018 |
| 423-707 | AT&T Mobility | Mobile carrier | 2009 |
| 423-895 | T-Mobile (including Sprint) | Mobile carrier | – |
| 423-997 | Bandwidth | Internet / business phone carrier | 2025 |
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.