Phone numbers in Thompson, Iowa
Thompson has 3 phone prefixes in area code 641.
Biggest holders: Level 3 (Lumen), AT&T Mobility, Winnebago Coop. Tel. Assn. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 33%
- Internet / business phone carrier 33%
- Phone company 33%
Every prefix in Thompson
Search the first six digits of a number in this list. If it's here, the number started in Thompson with the carrier shown. If it isn't, check the Iowa page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 641-306 | Level 3 (Lumen) | Internet / business phone carrier | 2026 |
| 641-514 | AT&T Mobility | Mobile carrier | 2022 |
| 641-584 | Winnebago Coop. Tel. Assn | Phone company | – |
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.