| Business | Phone |
| Communication Consultants 8899 E Prentice Ave, Greenwood Vlg 80111 | (303) 913-1768 |
| Douglas Telecommunications 5261 S Quebec St, Greenwood Vlg 80111 | (303) 409-1196 |
| Eschelon Telecom Inc 7000 E Belleview Ave # 150, Greenwood Vlg 80111 | (303) 773-1557 |
| Greenwood Telecommunications 6095 S Chester Way, Greenwood Vlg 80111 | (303) 267-0159 |
| Intercall 5299 Dtc Pkwy, Greenwood Vlg 80111 | (720) 529-4360 |
| Mfs Telecom Of Denver Inc 8765 E Orchard Rd, Greenwood Vlg 80111 | (303) 740-1000 |
| National Exchange Carriers 6400 S Fiddlers Green Cir, Greenwood Vlg 80111 | (303) 893-4400 |
| Sbc Datacomm 5251 Dtc Pkwy, Greenwood Vlg 80111 | (720) 200-9170 |
| Velo Com Inc 5613 Dtc Pkwy, Greenwood Vlg 80111 | (303) 874-1120 |
| Time Warner Telecom 5700 S Quebec St, Greenwood Vlg 80111 | (303) 566-1000 |
| Unisphere Solutions 5445 Dtc Pkwy # Ph4, Greenwood Vlg 80111 | (303) 488-3450 |
| Tcom Ventures 5299 Dtc Blvd, Greenwood Vlg 80111 | (303) 416-4000 |
| Telwares Communications Llc 6021 S Syracuse Way, Greenwood Vlg 80111 | (720) 488-1503 |