The Comcast Network (TCN) was an American cable television network owned by the Comcast Corporation, through NBCUniversal; it was carried mostly on Comcast cable systems in four states and 20 television markets in the Eastern U.S. from New Jersey to Virginia. The main focus of the network was on the Philadelphia area, although the channel attempted to structure its programs as national shows. Key markets included New Jersey, the Pennsylvania cities of Philadelphia, Pittsburgh and Harrisburg, Baltimore, Maryland, Washington, D.C. and Richmond, Virginia.