Comcast

Comcast Corporation, incorporated and headquartered in Philadelphia, is the largest American multinational telecommunications and media conglomerate. The corporation is the second-largest broadcasting and cable television company in the world by revenue (behind AT&T) and is also the largest pay-TV company, the largest cable TV company, and the largest home Internet service provider in the United States. Comcast is additionally the nation's third-largest home telephone service provider. As the owner of the international media company NBCUniversal since 2011, Comcast is also a high-volume producer of feature films for theatrical exhibition and television programming and a theme park operator.