Phone numbers in Clinton, Missouri
Clinton has 13 phone prefixes in area code 660.
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 69%
- Local phone company 15%
- Internet / business phone carrier 15%
Every prefix in Clinton
Search the first six digits of a number in this list. If it's here, the number started in Clinton with the carrier shown. If it isn't, check the Missouri page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 660-270 | T-Mobile (including Sprint) | Mobile carrier | 2022 |
| 660-296 | Onvoy | Internet / business phone carrier | 2026 |
| 660-331 | AT&T Mobility | Mobile carrier | 2025 |
| 660-351 | AT&T Mobility | Mobile carrier | – |
| 660-383 | Level 3 (Lumen) | Internet / business phone carrier | 2001 |
| 660-492 | Verizon Wireless | Mobile carrier | – |
| 660-525 | T-Mobile (including Sprint) | Mobile carrier | – |
| 660-539 | T-Mobile (including Sprint) | Mobile carrier | 2021 |
| 660-869 | T-Mobile (including Sprint) | Mobile carrier | 2015 |
| 660-885 | CenturyLink / Lumen | Local phone company | – |
| 660-890 | CenturyLink / Lumen | Local phone company | – |
| 660-898 | T-Mobile (including Sprint) | Mobile carrier | 2020 |
| 660-924 | T-Mobile (including Sprint) | 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.