| Business | Phone |
| Access Sectel 4394 Airwest Dr Se, Grand Rapids 49512 | (616) 554-0322 |
| Basic Communications 956 3 Mile Rd Nw, Grand Rapids 49544 | (616) 784-5000 |
| C 3 Group Inc 4950 Plainfield Ave Ne H, Grand Rapids 49525 | (616) 363-3346 |
| Cbi Telecommunication 2894 Thornhills Ave Se, Grand Rapids 49546 | (616) 301-3733 |
| Divine Inc 114 N Division Ave, Grand Rapids 49503 | (616) 957-4995 |
| Wingscom Communication 62 Commerce Ave Sw, Grand Rapids 49503 | (616) 742-0383 |
| Voex Inc 25 Ottawa Ave Sw, Grand Rapids 49503 | (616) 774-8900 |
| Us Signal Co Llc 20 Monroe Ave Nw, Grand Rapids 49503 | (616) 776-2551 |
| Telcon 2215 Oak Industrial Dr Ne, Grand Rapids 49505 | (616) 454-0826 |
| Tele-Reports Inc 648 Ethel Ave Se, Grand Rapids 49506 | (616) 458-1060 |
| Telegration Inc 125 Ottawa Ave Nw 150, Grand Rapids 49503 | (616) 742-5700 |
| Quantum Leap Comm Llc 400 Ann St Nw, Grand Rapids 49504 | (616) 742-5100 |
| Netech Corp 4595 Broadmoor Ave Se, Grand Rapids 49512 | (616) 281-8100 |