Zayo Group Holdings, Inc. provides bandwidth infrastructure solutions for the communications industry. It operates in four segments: Zayo Networks, Zayo Colocation (zColo), Allstream, and Other. The Zayo Networks segment offers access to fiber-to-the-towers and small cells that permit direct fiber connections to cell towers, small cells, hub sites, and mobile switching centers. This segment offers fiber solutions to carriers and other communication service providers, Internet service providers, wireless service providers, media and content companies, large enterprises, and other companies. It also provides Ethernet, IP, transit offerings, wide area networking products, media networks, and CloudLink for point-to-point data connections, multi-site managed networks, and international outsourced IT infrastructure environments to medium and large enterprises. In addition, this segment offers access to lit communications bandwidth infrastructure for carriers, content providers, financial services companies, healthcare, government entities, education institutions, and other medium and large enterprises. The zColo segment provides data center and cloud infrastructure solutions, and cyber security services to enterprise, carrier, cloud, and content customers. The Allstream segment offers cloud VoIP and data solutions comprising local voice offerings allowing business customers to complete telephone calls in their local exchange, as well as make long-distance, toll-free, and related calls. It also provides Ethernet and IP/MPLS VPN solutions. The Other segment offers network and technical resources to customers for designing, acquiring, and maintaining a network; and sells telecommunication equipment. The company operates a network of 130,000 route miles and 13.0 million fiber miles to various buildings and data centers in the United States, Canada, and Europe. The company was incorporated in 2007 and is based in Boulder, Colorado. Zayo Group Holdings, Inc. operates as a subsidiary of Front Range Topco, inc.