| Business | Phone |
| Adc Telecommunications 630 Plaza Dr, Littleton 80129 | (720) 344-6200 |
| Wholesale-Telecom 6737 Millstone St, Littleton 80130 | (303) 471-2550 |
| Delray Communications 9743 Canberra Ct, Littleton 80130 | (303) 346-8967 |
| J L & Assoc Po Box 260405, Littleton 80163 | (303) 683-4085 |