Cablevision Corporation was a major American cable television provider that operated from the mid-1970s until its sale to Altice in 2016. Founded by Charles Dolan, the company provided cable television, broadband internet, and telephone services to millions of customers in the New York metropolitan area. Cablevision was also the parent company of Madison Square Garden, the New York Knicks, the New York Rangers, and the New York Liberty.

Cablevision was a pioneer in the cable television industry, introducing the first cable television system in the New York area in 1973. The company quickly grew to become one of the largest cable television providers in the United States. Cablevision also developed the first interactive television system, which allowed viewers to access additional programming and services.

Cablevision was also a major player in the sports industry. The company owned the Madison Square Garden arena, as well as the New York Knicks, the New York Rangers, and the New York Liberty. Cablevision also owned the Fox Sports New York network, which broadcasted games from the Knicks, Rangers, and Liberty.

Cablevision was a major force in the cable television industry for over 30 years. The company provided cable television, broadband internet, and telephone services to millions of customers in the New York metropolitan area. Cablevision was also a major player in the sports industry, owning the Madison Square Garden arena, as well as the New York Knicks, the New York Rangers, and the New York Liberty.

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