US Colo is located in the high-tech heart of downtown Los Angeles, CA. Over 220 carriers which include AT&T, Sprint, Global Crossing, Time Warner, Level 3, Verizon, Qwest, and XO Communications — are located here. The Los Angeles US Colo data center features 99.999% uptime, SAS 70 Type II Certification, 24/7 monitoring, remote hands, ac and dc power backed-up by generators, batteries, UPS’ and more.