Phone numbers in Wyoming, Illinois
Wyoming has 5 phone prefixes in area code 309.
Biggest holders: Frontier, Verizon Wireless, Level 3 (Lumen). This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 20%
- Local phone company 40%
- Internet / business phone carrier 40%
Every prefix in Wyoming
Search the first six digits of a number in this list. If it's here, the number started in Wyoming with the carrier shown. If it isn't, check the Illinois page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 309-238 | Verizon Wireless | Mobile carrier | – |
| 309-606 | Level 3 (Lumen) | Internet / business phone carrier | 2002 |
| 309-695 | Frontier | Local phone company | – |
| 309-702 | Onvoy | Internet / business phone carrier | 2002 |
| 309-770 | Frontier | Local phone company | 2001 |
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.