Founded in 1973, Cablevision Systems Corporation, also known as Cablevision, is one of the leading media and entertainment companies in the United States. Its cable television operations serve more than 3 million households in the state of New York. The company's advanced telecommunications offerings include iO TV digital television, Optimum Online high-speed Internet, Optimum Voice digital voice-over-cable and Optimum Lightpath integrated business communications services. It also operates several programming businesses through Rainbow Media Holdings. Cablevision Systems Corporation publishes a daily newspaper, Newsday. In addition, the company owns Madison Square Garden and its sports teams, the New York Knicks, Rangers and Liberty. It operates Radio City Music Hall, Beacon Theatre and Chicago Theatre, as well as owns and operates Clearview Cinemas. Cablevision Systems Corporation maintains offices in the Tri-state area.
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