Comcast is an American telecommunications and entertainment conglomerate. It operates residential cable communications provider Xfinity, multiple national broadcast and cable-only channels (e.g., NBC, USA Network, Telemundo, and SYFY), Universal Pictures film studio, streaming service Peacock, and animation studios like DreamWorks. It is the largest cable TV company, the largest U.S. Internet service provider, the second-largest pay TV company, and the third-largest U.S. telephone service provider. The company was established in 1963 as American Cable Systems.