Phone numbers in New Haven, Michigan
New Haven has 11 phone prefixes in area code 586.
Biggest holders: Level 3 (Lumen), MetroPCS (T-Mobile), Onvoy. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 27%
- Local phone company 9%
- Internet / business phone carrier 64%
Every prefix in New Haven
Search the first six digits of a number in this list. If it's here, the number started in New Haven with the carrier shown. If it isn't, check the Michigan page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 586-244 | Level 3 (Lumen) | Internet / business phone carrier | 2006 |
| 586-270 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 586-271 | T-Mobile (including Sprint) | Mobile carrier | 2019 |
| 586-277 | MetroPCS (T-Mobile) | Mobile carrier | 2010 |
| 586-304 | Onvoy | Internet / business phone carrier | 2021 |
| 586-315 | Bandwidth | Internet / business phone carrier | 2012 |
| 586-339 | MetroPCS (T-Mobile) | Mobile carrier | – |
| 586-646 | Teleport Communications America | Internet / business phone carrier | – |
| 586-701 | Onvoy | Internet / business phone carrier | 2016 |
| 586-749 | AT&T (local phone) | Local phone company | – |
| 586-928 | Level 3 (Lumen) | Internet / business phone carrier | – |
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.