Phone numbers in Ketchum, Idaho
Ketchum has 16 phone prefixes in area codes 208, 986.
Biggest holders: CenturyLink / Lumen, T-Mobile (including Sprint), Verizon Wireless. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 44%
- Local phone company 38%
- Internet / business phone carrier 19%
Every prefix in Ketchum
Search the first six digits of a number in this list. If it's here, the number started in Ketchum with the carrier shown. If it isn't, check the Idaho page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 208-309 | AT&T Mobility | Mobile carrier | – |
| 208-450 | T-Mobile (including Sprint) | Mobile carrier | 2001 |
| 208-471 | T-Mobile (including Sprint) | Mobile carrier | – |
| 208-481 | Verizon Wireless | Mobile carrier | – |
| 208-578 | CenturyLink / Lumen | Local phone company | – |
| 208-622 | CenturyLink / Lumen | Local phone company | – |
| 208-720 | Verizon Wireless | Mobile carrier | – |
| 208-721 | Verizon Wireless | Mobile carrier | – |
| 208-725 | CenturyLink / Lumen | Local phone company | – |
| 208-726 | CenturyLink / Lumen | Local phone company | – |
| 208-727 | CenturyLink / Lumen | Local phone company | – |
| 208-788 | CenturyLink / Lumen | Local phone company | – |
| 208-806 | Level 3 (Lumen) | Internet / business phone carrier | 2002 |
| 208-913 | Comcast | Internet / business phone carrier | 2018 |
| 208-928 | Comcast | Internet / business phone carrier | – |
| 986-209 | T-Mobile (including Sprint) | Mobile 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.