| Business | Phone |
| Deane Communications Inc 6063 S Vinewood St, Littleton 80120 | (303) 798-8565 |
| Lantana Communications 5808 S Rapp St, Littleton 80120 | (720) 283-3201 |
| Marconi Communications 801 W Mineral Ave # 203, Littleton 80120 | (303) 798-2300 |
| Msn Communications 5239 S Rio Grande St, Littleton 80120 | (303) 734-4053 |
| Panasonic Phone Ctr 5723 S Prince St, Littleton 80120 | (303) 703-3222 |
| Sos Communications 9488 Hibiscus Dr, Littleton 80126 | (303) 470-7767 |
| Highlands Telecomm Svc 7189 Gray Fox Ln, Littleton 80130 | (303) 346-7774 |
| Krone Inc 630 Plaza Dr # 100, Littleton 80129 | (303) 790-2619 |
| Aaa Telephone Co 5201 S Meade St, Littleton 80123 | (303) 798-8733 |
| Twin Eagle Consulting 11743 W Belmont Dr, Littleton 80127 | (303) 531-4598 |
| Axess Communications 10901 W Toller Dr, Littleton 80127 | (303) 531-6000 |
| Bradco Communications Inc 7491 S Upham St, Littleton 80128 | (303) 973-8132 |
| Siemens Building Technologies 7810 Shaffer Pkwy # 100, Littleton 80127 | (303) 279-8500 |
| Fox Telecommunications Inc 8101 Shaffer Pkwy # 6, Littleton 80127 | (303) 972-0205 |
| General Data Comm Inc Littleton 80128 | (720) 981-1552 |