Phone numbers in Onaway, Michigan
Onaway has 3 phone prefixes in area code 989.
Biggest holders: Verizon Wireless, Level 3 (Lumen), Frontier. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 33%
- Local phone company 33%
- Internet / business phone carrier 33%
Every prefix in Onaway
Search the first six digits of a number in this list. If it's here, the number started in Onaway with the carrier shown. If it isn't, check the Michigan page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 989-306 | Verizon Wireless | Mobile carrier | 2003 |
| 989-515 | Level 3 (Lumen) | Internet / business phone carrier | 2022 |
| 989-733 | Frontier | 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.