Phone numbers in West Branch, Michigan
West Branch has 10 phone prefixes in area code 989.
Biggest holders: AT&T Mobility, AT&T (local phone), Windstream (PAETEC). This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 30%
- Local phone company 20%
- Internet / business phone carrier 30%
- Phone company 20%
Every prefix in West Branch
Search the first six digits of a number in this list. If it's here, the number started in West Branch with the carrier shown. If it isn't, check the Michigan page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 989-216 | Windstream (PAETEC) | Internet / business phone carrier | – |
| 989-312 | AT&T Mobility | Mobile carrier | – |
| 989-343 | AT&T (local phone) | Local phone company | – |
| 989-345 | AT&T (local phone) | Local phone company | – |
| 989-516 | Interactive Services Network | Internet / business phone carrier | 2001 |
| 989-701 | AT&T Mobility | Mobile carrier | – |
| 989-726 | Level 3 (Lumen) | Internet / business phone carrier | 2002 |
| 989-787 | Cynergycomm.net | Phone company | 2005 |
| 989-896 | 123.NET | Phone company | 2002 |
| 989-942 | T-Mobile (including Sprint) | Mobile 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.