| Business | Phone |
| Cunningham Communications 1675 Michigan St Ne G, Grand Rapids 49503 | (616) 459-6500 |
| Eagle Message Ctr 1029 28th St Se, Grand Rapids 49508 | (616) 243-6085 |
| Vscda Services 3160 Thornapple River Dr Se, Grand Rapids 49546 | (616) 949-8281 |
| Telephone Message Ctr 74 Market Ave Sw, Grand Rapids 49503 | (616) 459-4300 |
| Premiere Gatekeeper Svc 4106 Lake Michigan Dr Nw, Grand Rapids 49534 | (616) 453-4885 |