Comcast

Comcast Corporation (NASDAQ: CMCSA, CMCSK) is an American provider of entertainment, information and communications products and services. It is the largest cable operator, one of the biggest mass media, home Internet service provider, and third largest home telephone service provider in the United States, providing cable television, broadband Internet, telephone service and in some areas home security (including burglar alarms, surveillance cameras, fire alarm systems and home automation) to both residential and commercial customers in 40 states and the District of Columbia.