Phone numbers in Newport, Tennessee
Newport has 15 phone prefixes in area code 423.
Biggest holders: AT&T (local phone), AT&T Mobility, UScellular. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 40%
- Local phone company 27%
- Internet / business phone carrier 27%
- Paging service 7%
Every prefix in Newport
Search the first six digits of a number in this list. If it's here, the number started in Newport with the carrier shown. If it isn't, check the Tennessee page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 423-237 | AT&T Mobility | Mobile carrier | – |
| 423-248 | UScellular | Mobile carrier | – |
| 423-379 | Onvoy | Internet / business phone carrier | – |
| 423-415 | Verizon Wireless | Mobile carrier | 2010 |
| 423-465 | AT&T Mobility | Mobile carrier | 2005 |
| 423-469 | Spok | Paging service | – |
| 423-487 | AT&T (local phone) | Local phone company | – |
| 423-532 | Windstream (PAETEC) | Internet / business phone carrier | – |
| 423-540 | Onvoy | Internet / business phone carrier | – |
| 423-608 | Verizon Wireless | Mobile carrier | – |
| 423-613 | AT&T (local phone) | Local phone company | – |
| 423-623 | AT&T (local phone) | Local phone company | – |
| 423-625 | AT&T (local phone) | Local phone company | – |
| 423-720 | Bandwidth | Internet / business phone carrier | 2015 |
| 423-721 | UScellular | Mobile carrier | – |
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.