| Business | Phone |
| Big Communications 1212 S Washington Ave, Royal Oak 48067 | (248) 544-9586 |
| Specialty Communications 1523 N Main St, Royal Oak 48067 | (248) 542-7200 |
| Hmp Communications 325 E 6th St, Royal Oak 48067 | (248) 541-0130 |
| Hmp Communications 4502 Thorncroft Ave, Royal Oak 48073 | (248) 549-1472 |
| Hmp Communications 631 W 13 Mile Rd, Royal Oak 48073 | (248) 589-9342 |
| Finn Maccool Communications 306 E 4th St, Royal Oak 48067 | (248) 723-2788 |