| Business | Phone |
| Mmp Telecom 3031 W Grand Blvd, Detroit 48202 | (313) 872-6800 |
| Talk America Inc 3122 W Grand Blvd, Detroit 48202 | (586) 574-2423 |
| Broadwing Communications 1860 Gratiot Ave, Detroit 48207 | (313) 259-0870 |
| Page Call 7001 Gratiot Ave, Detroit 48207 | (313) 571-2300 |
| Elantic Telecom 1686 Howard St, Detroit 48216 | (313) 962-6549 |
| Mci 17151 Lahser Rd, Detroit 48219 | (313) 255-5290 |
| Atiantic-Western Telecom 5770 W Outer Dr, Detroit 48235 | (313) 342-3282 |
| Hodge Telecommunications 2000 Brush St, Detroit 48226 | (313) 961-0211 |
| Level 3 Communications 1249 Washington Blvd, Detroit 48226 | (313) 965-0386 |
| Sbc 444 Michigan Ave, Detroit 48226 | (313) 223-9900 |
| Mc Leod Usa 15371 Grand River Ave, Detroit 48227 | (313) 659-9263 |
| A T & T 200 Renaissance Ctr, Detroit 48243 | (313) 393-4668 |