Phone numbers in Flandreau, South Dakota
Flandreau has 9 phone prefixes in area code 605.
Biggest holders: Verizon Wireless, CenturyLink / Lumen, Bluepeak. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 56%
- Local phone company 22%
- Phone company 22%
Every prefix in Flandreau
Search the first six digits of a number in this list. If it's here, the number started in Flandreau with the carrier shown. If it isn't, check the South Dakota page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 605-530 | AT&T Mobility | Mobile carrier | – |
| 605-531 | Verizon Wireless | Mobile carrier | 2022 |
| 605-534 | CenturyLink / Lumen | Local phone company | – |
| 605-573 | Bluepeak | Phone company | – |
| 605-633 | Verizon Wireless | Mobile carrier | – |
| 605-684 | Bluepeak | Phone company | – |
| 605-701 | Ringer Mobile | Mobile carrier | 2025 |
| 605-864 | Verizon Wireless | Mobile carrier | – |
| 605-997 | CenturyLink / Lumen | Local 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.