Context: Comcast Corporation, formerly registered as Comcast Holdings,[note 1] is an American multinational mass media company and is the largest broadcasting and largest cable company in the world by revenue. It is the second largest pay-TV company after the AT&T-DirecTV acquisition, largest cable TV company and largest home Internet service provider in the United States, and the nation's third largest home telephone service provider. Comcast services U.S. residential and commercial customers in 40 states and the District of Columbia. The company's headquarters are located in Philadelphia, Pennsylvania.

Question: What is the largest cable company in the world by revenue?
Answer: Comcast Corporation

Question: What merged companies are the largest pay TV entity in the world?
Answer: AT&T-DirecTV

Question: Comcast is also the largest media company in the United States in what broadband area?
Answer: Internet service provider

Question: In what areas of the US does Comcast operate?
Answer: 40 states and the District of Columbia

Question: Where is Comcast company headquarters?
Answer: Philadelphia, Pennsylvania

Question: What did Comcast Corporation change its name to?
Answer: Unanswerable

Question: How many states does AT&T serve?
Answer: Unanswerable

Question: Where is the AT&T headquarters?
Answer: Unanswerable

Question: What company merged with Comcast, making it the largest TV company?
Answer: Unanswerable

Question: What is the largest home internet provider in the world?
Answer: Unanswerable