| Business | Phone |
| Level 3 Communications 32331 Grand River Ave, Farmington 48336 | (248) 476-6554 |
| Amt Telecommunications 30777 Northwestern Hwy, Farmington 48334 | (248) 862-2000 |
| Nice Systems 38744 Horton Dr, Farmington 48331 | (248) 324-3721 |
| Midwest Cooperating Comms Co 31275 Northwestern Hwy, Farmington 48334 | (248) 855-0005 |