Cablevision Systems Corporation is a leading telecommunications, media and entertainment company. Cablevision's portfolio of operations includes a full suite of advanced digital television, voice and high-speed Internet services, publishing and interactive media, world-renowned entertainment showplaces, professional sports teams, and popular national and regional programming networks.

Founded in 1973 as a cable television operator with 1,500 Long Island customers, today Cablevision operates the nation's single largest cable cluster, passing more than 4.7 million households and 600,000 businesses in the New York metropolitan area with its state-of-the-art fiber-rich network. This world-class system connects residential and business customers in the country’s top market to Cablevision’s Optimum®-branded communications services: iO Interactive Optimum® digital television, Optimum Online® high-speed Internet and Optimum Voice® digital voice. In addition, Cablevision's Optimum Lightpath® meets the communications needs of larger companies as a leading provider of integrated business communications solutions. The company’s telecommunications system also delivers the award-winning News 12 Networks, a local-news leader and iO exclusive.