| Business | Phone |
| A T & Tcits 4680 Talbot Dr, Boulder 80303 | (303) 494-1465 |
| Bandwidth Communications Inc 1630 63rd St # 8, Boulder 80301 | (303) 444-5328 |
| Bandwith Communications Inc 4730 Table Mesa Dr, Boulder 80305 | (303) 554-9100 |
| Brocade Communications 1919 14th St, Boulder 80302 | (303) 443-3878 |
| Downey Communications 1507 Bluebell Ave, Boulder 80302 | (303) 938-8285 |
| Enfuego Strategic Comm 113 Spruce St, Boulder 80301 | (303) 381-2571 |
| Evergreen Communication 1007 Pearl St, Boulder 80302 | (303) 444-4474 |
| Gobig Strategic Communications 1526 Spruce St # 303, Boulder 80302 | (303) 928-2333 |
| Motorola Inc Boulder 80302 | (303) 402-6926 |
| Siren Communications 3091 6th St, Boulder 80304 | (303) 786-7869 |
| Teleport Communications Group 3129 28th St, Boulder 80301 | (303) 473-0476 |
| Umbria Communications 1655 Walnut St, Boulder 80302 | (720) 565-6883 |
| Umbria Communications 1942 Broadway St, Boulder 80302 | (303) 541-0700 |