Phone numbers in Gladwin, Michigan
Gladwin has 11 phone prefixes in area code 989.
Biggest holders: Verizon Wireless, AT&T (local phone), Onvoy. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 55%
- Local phone company 18%
- Internet / business phone carrier 27%
Every prefix in Gladwin
Search the first six digits of a number in this list. If it's here, the number started in Gladwin with the carrier shown. If it isn't, check the Michigan page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 989-246 | AT&T (local phone) | Local phone company | – |
| 989-256 | Onvoy | Internet / business phone carrier | – |
| 989-329 | Verizon Wireless | Mobile carrier | 2001 |
| 989-347 | Interactive Services Network | Internet / business phone carrier | 2003 |
| 989-359 | T-Mobile (including Sprint) | Mobile carrier | 2010 |
| 989-387 | Verizon Wireless | Mobile carrier | 2001 |
| 989-426 | AT&T (local phone) | Local phone company | – |
| 989-519 | Onvoy | Internet / business phone carrier | 2023 |
| 989-578 | Verizon Wireless | Mobile carrier | – |
| 989-709 | Verizon Wireless | Mobile carrier | 2004 |
| 989-965 | Verizon Wireless | Mobile carrier | 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.