Cable News Network, almost always referred to by its initialism CNN, is a major U.S. cable news network founded in 1980 by Ted Turner. Upon its launch, CNN was the first network to provide 24-hour television news coverage, and the first all-news television network in the United States. While the news network has numerous affiliates, CNN primarily broadcasts from its headquarters at the CNN Center in Atlanta, the Time Warner Center in New York City, and studios in Washington, D.C. and Los Angeles. CNN is owned by parent company Time Warner, and the U.S. news network is a division of the Turner Broadcasting System.
CNN is sometimes referred to as CNN/U.S. to distinguish the North American channel from its international counterpart, CNN International. As of June 2008, CNN is available in over 93 million U.S. households. Broadcast coverage extends to over 890,000 American hotel rooms, and the U.S broadcast is also shown in Canada. Globally, CNN programming airs through CNN International, which can be seen by viewers in over 212 countries and territories. In terms of regular viewers (Nielsen Ratings), CNN rates as the United States' number two cable news network, after only Fox News, while the network has the most unique viewers (Nielsen Cume Ratings).