| Business | Phone |
| American Telephone Tech 8672 15th Ave Ne, Seattle 98115 | (425) 556-5000 |
| Beaver Creek Telephone Co 417 2nd Ave W, Seattle 98119 | (206) 479-2328 |
| I Tech Po Box 100, Seattle 98111 | (206) 323-2600 |
| Hungarian Telephone & Cable 1201 3rd Ave 3400, Seattle 98101 | (206) 654-0204 |
| Procom Seattle 98101 | (206) 275-0081 |
| Sbc Long Distance Seattle 98101 | (206) 883-9927 |
| Seattle Videoconference Ctr 520 Pike St 1245, Seattle 98101 | (206) 622-5955 |
| Us West Employment Office 1600 7th Ave 2110, Seattle 98101 | (206) 345-1234 |
| Wsctc Videoconferencing 800 Convention Pl, Seattle 98101 | (206) 832-1787 |
| X 5 Solutions 1520 4th Ave 400, Seattle 98101 | (206) 973-5800 |
| Us Technologles 2366 Eastlake Ave E, Seattle 98102 | (206) 568-1314 |
| M Metrics Inc 83 S King St 301, Seattle 98104 | (206) 447-1860 |
| Us Telco 700 5th Ave 2400, Seattle 98104 | (206) 505-5000 |
| Winstar Communications Inc 1000 2nd Ave, Seattle 98104 | (206) 829-9800 |
| Tel West 3823 Delridge Way Sw, Seattle 98106 | (206) 933-5600 |
| Nextlink 1000 Denny Way 200, Seattle 98109 | (206) 315-6398 |
| Time Warner Telecom Inc 223 Taylor Ave N, Seattle 98109 | (206) 676-8000 |
| World Communications Inc 190 Queen Anne Ave N 250, Seattle 98109 | (206) 652-4470 |
| Postage Plus 7627 Rainier Ave S, Seattle 98118 | (206) 721-5166 |
| Tel-West 3701 S Norfolk St 300, Seattle 98118 | (206) 583-8750 |
| Telicor Inc 100 W Harrison St S200, Seattle 98119 | (206) 436-9700 |
| Pacific Northwest Gigapop Seattle 98121 | (206) 727-9900 |
| Tel West Communications Llc Po Box 94400, Seattle 98124 | (206) 223-1400 |
| Netstream Communications 12101 Tukwila Intl Blvd 400, Seattle 98168 | (206) 826-3256 |
| Mci 19518 International Blvd, Seattle 98188 | (206) 870-0519 |