Phone numbers in Sweetwater, Tennessee
Sweetwater has 9 phone prefixes in area code 423.
Biggest holders: Verizon Wireless, AT&T (local phone), T-Mobile (including Sprint). This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 44%
- Local phone company 22%
- Internet / business phone carrier 33%
Every prefix in Sweetwater
Search the first six digits of a number in this list. If it's here, the number started in Sweetwater with the carrier shown. If it isn't, check the Tennessee page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 423-271 | Verizon Wireless | Mobile carrier | 2011 |
| 423-337 | AT&T (local phone) | Local phone company | – |
| 423-351 | AT&T (local phone) | Local phone company | – |
| 423-371 | T-Mobile (including Sprint) | Mobile carrier | – |
| 423-536 | Windstream (PAETEC) | Internet / business phone carrier | – |
| 423-561 | Onvoy | Internet / business phone carrier | – |
| 423-694 | T-Mobile (including Sprint) | Mobile carrier | 2021 |
| 423-814 | Telnyx | Internet / business phone carrier | – |
| 423-836 | Verizon Wireless | 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.