Comcast, formerly referred to as Comcast Holdings, is a global mass medial and technology company. It is the largest home Internet service and cable company provider in the United States and the largest broadcasting company in the world in terms of revenue.
Comcast is the third-largest telephone service provider in the U.S. that serves both commercial and residential clients in 40 states as of 2014. The headquarters of the company is located in Philadelphia, Pa. Comcast is also known for producing different television programs and feature films. It operates cable-only channels, such as NBCSN and the Golf Channel, as well as national broadcast channels like Telemundo and NBC.