Phone numbers in Decorah, Iowa
Decorah has 11 phone prefixes in area code 563.
Biggest holders: Verizon Wireless, Airus, UScellular. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 45%
- Local phone company 18%
- Internet / business phone carrier 18%
- Phone company 18%
Every prefix in Decorah
Search the first six digits of a number in this list. If it's here, the number started in Decorah with the carrier shown. If it isn't, check the Iowa page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 563-202 | Verizon Wireless | Mobile carrier | 2013 |
| 563-277 | Mcc Telephony | Internet / business phone carrier | 2010 |
| 563-287 | Airus | Phone company | 2019 |
| 563-334 | Airus | Phone company | 2018 |
| 563-379 | UScellular | Mobile carrier | – |
| 563-380 | UScellular | Mobile carrier | – |
| 563-382 | CenturyLink / Lumen | Local phone company | – |
| 563-387 | CenturyLink / Lumen | Local phone company | – |
| 563-419 | Verizon Wireless | Mobile carrier | – |
| 563-517 | T-Mobile (including Sprint) | Mobile carrier | – |
| 563-644 | TON80 Communications | Internet / business phone carrier | 2021 |
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.