| Business | Phone |
| Citizens Communications Co 3 High Ridge Park, Stamford 6905 | (203) 614-5600 |
| Regenesis Telecom 46 Martin St, Stamford 6902 | (203) 921-1204 |
| Qwest Communications 114 Stillwater Ave, Stamford 6902 | (203) 323-8799 |
| Qwest Communications 9 W Broad St # 200, Stamford 6902 | (203) 905-7400 |
| Neon Inc 1 Walton Pl, Stamford 6901 | (203) 351-1359 |
| Metromedia Intl Telecomms Inc 333 Ludlow St, Stamford 6902 | (203) 316-4500 |
| Mfs Intelenet Inc 460 Summer St, Stamford 6901 | (203) 969-3700 |
| Mci 555 Main St, Stamford 6901 | (203) 325-2581 |
| Hi-Tech Communications 400 Main St, Stamford 6901 | (203) 363-0639 |
| Link Access Svc Llc 111 Prospect St # 3, Stamford 6901 | (203) 363-0088 |
| Ixc Telecommunications 44 Commerce Rd, Stamford 6902 | (203) 324-5995 |