Zayo Group Holdings, Inc. provides communications infrastructure services, including fiber and bandwidth connectivity, colocation and cloud infrastructure to a range of businesses. The Company operates in five segments: Dark Fiber Solutions, Network Connectivity, Colocation and Cloud Infrastructure, Zayo Canada and Other. Its products include leased dark fiber, fiber to cellular towers and small cell sites, wavelength connections, Ethernet, Internet Protocol (IP) connectivity and cloud services. Its products and services enable high-bandwidth applications, such as cloud-based computing, video, mobile, social media and machine-to-machine connectivity. As of March 1, 2017, the Company operated 8,100 route miles of long haul fiber and 4,000 miles of dense metro fiber across Denver, Minneapolis, Phoenix, Portland, Seattle, Sacramento, San Francisco, San Jose, Salt Lake City, Spokane and Boise, with on-net connectivity to over 3,100 enterprise buildings and 100 data centers.