| Business | Phone |
| Alta Sierra Communications 14855 Mono Way, Sonora 95370 | (209) 536-2688 |
| Sierra Nevada Comm Billing 20033 Highway 108, Sonora 95370 | (209) 588-8294 |
| Sierra Nevada Communications 16913 Amy Dr, Sonora 95370 | (209) 588-9601 |
| Tccca 19000 Nugget Blvd, Sonora 95370 | (209) 536-1888 |