Zayo Group Holdings, Inc. engages in the provision of communications and bandwidth infrastructure services in the United States, Canada, and Europe. It operates through the following segments: Zayo Networks, Zayo Colocation (zColo), Allstream, and Other. The Zayo Networks segment includes access to bandwidth infrastucture. The Zayo Colocation segment refers to data center and cloud infrastructure solutions to a range of enterprise, carrier, cloud, and content customers. The Allstream segment consist of cloud volp and data solutions. The Other segment comprises of zayo professional services (ZPS), which provides network and technical resources to customers. The company was founded by John Louis Scarano, Sandi Mays, and Daniel P. Caruso on November 13, 2007 and is headquartered in Boulder, CO.