Phone numbers in Clinton, Iowa
Clinton has 18 phone prefixes in area code 563.
Biggest holders: CenturyLink / Lumen, UScellular, Verizon Wireless. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 44%
- Local phone company 33%
- Internet / business phone carrier 22%
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 Iowa page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 563-206 | CenturyLink / Lumen | Local phone company | – |
| 563-212 | UScellular | Mobile carrier | – |
| 563-215 | AT&T Mobility | Mobile carrier | 2024 |
| 563-219 | Bandwidth | Internet / business phone carrier | – |
| 563-241 | CenturyLink / Lumen | Local phone company | – |
| 563-242 | CenturyLink / Lumen | Local phone company | – |
| 563-243 | CenturyLink / Lumen | Local phone company | – |
| 563-244 | CenturyLink / Lumen | Local phone company | – |
| 563-249 | Verizon Wireless | Mobile carrier | – |
| 563-259 | CenturyLink / Lumen | Local phone company | – |
| 563-278 | Onvoy | Internet / business phone carrier | 2019 |
| 563-321 | Verizon Wireless | Mobile carrier | 2002 |
| 563-357 | UScellular | Mobile carrier | – |
| 563-477 | Onvoy | Internet / business phone carrier | 2021 |
| 563-503 | MetroPCS (T-Mobile) | Mobile carrier | – |
| 563-519 | Windstream (PAETEC) | Internet / business phone carrier | 2001 |
| 563-559 | T-Mobile (including Sprint) | Mobile carrier | – |
| 563-593 | 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.