Cablevision Systems Corporation was an American cable television company with systems serving areas surrounding New York City. It was the fifth-largest cable provider and ninth-largest television provider in the United States. Throughout its existence and in its final years, Cablevision exclusively served customers residing in New York, New Jersey, Connecticut, and a small part of Pennsylvania. However, at one time it provided service in as many as 19 states. Cablevision also offered high-speed Internet connections, digital cable, and VoIP phone service through its Optimum brand name. Cablevision also offered a WiFi-only mobile phone service dubbed Freewheel.