Phone numbers in Irwin, Idaho
Irwin has 3 phone prefixes in area code 208.
Biggest holders: Verizon Wireless, Silver Star Communications. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 67%
- Local phone company 33%
Every prefix in Irwin
Search the first six digits of a number in this list. If it's here, the number started in Irwin with the carrier shown. If it isn't, check the Idaho page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 208-270 | Verizon Wireless | Mobile carrier | – |
| 208-483 | Silver Star Communications | Local phone company | – |
| 208-499 | Verizon Wireless | Mobile carrier | 2005 |
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.