Cogent Communications Holdings, Inc., through its subsidiaries, provides high-speed Internet access and Internet protocol communications services primarily to small and medium-sized businesses, communications service providers, and other bandwidth-intensive organizations in North America, Europe, and Asia. The company offers on-net Internet access services to bandwidth-intensive users, such as universities, other Internet service providers, telephone companies, cable television companies, Web hosting companies, content delivery network companies, and commercial content and application service providers; and to corporate customers located in multi-tenant office buildings, including law firms, financial services firms, advertising and marketing firms, and other professional services businesses. It also provides its on-net services in carrier-neutral data centers, Cogent controlled data centers, and single-tenant office buildings. In addition, the company offers off-net services to businesses that are connected to its network primarily by means of 'last mile' access service lines obtained from other carriers primarily in the form of metropolitan Ethernet circuits. Further, it provides Internet connectivity to customers that are not located in buildings directly connected to the company's network, as well as offers voice services. The company operates 52 data centers. Cogent Communications Holdings, Inc. was founded in 1999 and is headquartered in Washington, the District of Columbia.