Phone numbers in Pierre, South Dakota
Pierre has 15 phone prefixes in area code 605.
Biggest holders: CenturyLink / Lumen, Verizon Wireless, AT&T Mobility. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 40%
- Local phone company 33%
- Internet / business phone carrier 20%
- Phone company 7%
Every prefix in Pierre
Search the first six digits of a number in this list. If it's here, the number started in Pierre with the carrier shown. If it isn't, check the South Dakota page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 605-220 | Verizon Wireless | Mobile carrier | – |
| 605-222 | Verizon Wireless | Mobile carrier | – |
| 605-223 | CenturyLink / Lumen | Local phone company | – |
| 605-224 | CenturyLink / Lumen | Local phone company | – |
| 605-280 | AT&T Mobility | Mobile carrier | – |
| 605-295 | AT&T Mobility | Mobile carrier | 2003 |
| 605-301 | Bandwidth | Internet / business phone carrier | 2001 |
| 605-318 | Verizon Wireless | Mobile carrier | 2020 |
| 605-494 | Midcontinent Communications | Phone company | 2007 |
| 605-502 | Telnyx | Internet / business phone carrier | 2021 |
| 605-609 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 605-773 | CenturyLink / Lumen | Local phone company | – |
| 605-776 | CenturyLink / Lumen | Local phone company | – |
| 605-805 | MetroPCS (T-Mobile) | Mobile carrier | 2021 |
| 605-945 | 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.