| Business | Phone |
| Advance Communication Inc 7318 Eastern Ave Se, Grand Rapids 49508 | (616) 656-3769 |
| Ainsco Inc 6004 Parview Dr Se, Grand Rapids 49546 | (616) 285-4713 |
| City Signal 2855 Oak Industrial Dr Ne, Grand Rapids 49505 | (616) 235-4990 |
| Communican 1037 Noble St Se, Grand Rapids 49507 | (616) 453-3539 |
| Corporate Connections 1849 Millbank St Se, Grand Rapids 49508 | (616) 243-0669 |
| Diverse Voices 3356 Hidden Hills Ave Se, Grand Rapids 49546 | (616) 942-6419 |
| Drew Wireless 459 Collindale Ave Nw, Grand Rapids 49504 | (616) 453-7200 |
| Global Linx 1346 Boston St Se, Grand Rapids 49507 | (616) 475-4570 |
| Inner Action 103 College Ave Se, Grand Rapids 49503 | (616) 456-0000 |
| Shareco Communications 2477 Waldorf Ct Nw, Grand Rapids 49544 | (616) 791-1102 |