Phone numbers in Caro, Michigan
Caro has 8 phone prefixes in area code 989.
Biggest holders: Brightspeed Of Michigan, Interactive Services Network, T-Mobile (including Sprint). This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 38%
- Local phone company 25%
- Internet / business phone carrier 38%
Every prefix in Caro
Search the first six digits of a number in this list. If it's here, the number started in Caro with the carrier shown. If it isn't, check the Michigan page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 989-231 | Interactive Services Network | Internet / business phone carrier | 2004 |
| 989-286 | T-Mobile (including Sprint) | Mobile carrier | 2004 |
| 989-325 | Thumb Cellular | Mobile carrier | 2004 |
| 989-589 | Onvoy | Internet / business phone carrier | 2018 |
| 989-670 | AT&T Mobility | Mobile carrier | – |
| 989-672 | Brightspeed Of Michigan | Local phone company | – |
| 989-673 | Brightspeed Of Michigan | Local phone company | – |
| 989-989 | Commio | Internet / business phone carrier | 2023 |
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.