| Business | Phone |
| Ssl Communications Inc 1864 Belvidere Rd, Grayslake 60030 | (847) 452-1813 |
| Rosen Communications 17360 W Hickory Ln, Grayslake 60030 | (847) 816-0530 |
| Courage Communications 100 S Atkinson Rd 116, Grayslake 60030 | (847) 571-8517 |
| Dls Communications 1597 Belle Haven Dr, Grayslake 60030 | (847) 201-9422 |
| Dls Communications 341 Dorchester Ln, Grayslake 60030 | (847) 231-7422 |
| E Z Communications 1227 N Il Route 83 A, Grayslake 60030 | (847) 223-1071 |