Phone numbers in Climtmorrs, Michigan
Climtmorrs has 9 phone prefixes in area code 810.
Biggest holders: AT&T (local phone), T-Mobile (including Sprint), MCImetro (Verizon Business). This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 11%
- Local phone company 44%
- Internet / business phone carrier 44%
Every prefix in Climtmorrs
Search the first six digits of a number in this list. If it's here, the number started in Climtmorrs with the carrier shown. If it isn't, check the Michigan page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 810-349 | T-Mobile (including Sprint) | Mobile carrier | 2024 |
| 810-368 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 810-440 | Onvoy | Internet / business phone carrier | 2021 |
| 810-547 | Teleport Communications America | Internet / business phone carrier | – |
| 810-564 | AT&T (local phone) | Local phone company | – |
| 810-640 | AT&T (local phone) | Local phone company | – |
| 810-670 | Windstream (PAETEC) | Internet / business phone carrier | – |
| 810-686 | AT&T (local phone) | Local phone company | – |
| 810-687 | 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.