Phone numbers in Croswell, Michigan
Croswell has 4 phone prefixes in area code 810.
Biggest holders: AT&T (local phone), Teleport Communications America, AT&T Mobility. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 25%
- Local phone company 50%
- Internet / business phone carrier 25%
Every prefix in Croswell
Search the first six digits of a number in this list. If it's here, the number started in Croswell with the carrier shown. If it isn't, check the Michigan page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 810-546 | Teleport Communications America | Internet / business phone carrier | – |
| 810-679 | AT&T (local phone) | Local phone company | – |
| 810-712 | AT&T Mobility | Mobile carrier | – |
| 810-878 | AT&T (local phone) | 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.