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.

Time Warner Cable, Inc. (TWC) was an American cable television company. Before it was acquired by Charter Communications on May 18, 2016, it was ranked the second largest cable company in the United States by revenue behind only Comcast, operating in 29 states. Its corporate headquarters were located in the Time Warner Center in Midtown Manhattan, New York City, with other corporate offices in Stamford, Connecticut; Charlotte, North Carolina; and Herndon, Virginia.