Claim: L.A. Law aired on a major television network.

The National Broadcasting Company -LRB- NBC -RRB- is an American English language commercial broadcast television network that is a flagship property of NBCUniversal , a subsidiary of Comcast . The network is headquartered in the Comcast Building -LRB- formerly known as the GE Building -RRB- at Rockefeller Center in New York City , with additional major offices near Los Angeles -LRB- at Universal City Plaza -RRB- , Chicago -LRB- at the NBC Tower -RRB- and soon in Philadelphia at Comcast Innovation and Technology Center . The network is part of the Big Three television networks . NBC is sometimes referred to as the `` Peacock Network '' , in reference to its stylized peacock logo , which was originally created in 1956 for its then-new color broadcasts and became the network 's official emblem in 1979 .   Founded in 1926 by the Radio Corporation of America -LRB- RCA -RRB- , NBC is the oldest major broadcast network in the United States . In 1986 , control of NBC passed to General Electric -LRB- GE -RRB- -- which previously owned RCA and NBC until 1930 , when it was forced to sell the companies as a result of antitrust charges -- through its $ 6.4 billion purchase of RCA . Following the acquisition by GE -LRB- which later liquidated RCA -RRB- , Bob Wright served as chief executive officer of NBC , remaining in that position until his retirement in 2007 , when he was succeeded by Jeff Zucker . In 2003 , French media company Vivendi merged its entertainment assets with GE , forming NBC Universal . Comcast purchased a controlling interest in the company in 2011 , and acquired General Electric 's remaining stake in 2013 . Following the Comcast merger , Zucker left NBC Universal and was replaced as CEO by Comcast executive Steve Burke .   NBC has thirteen owned-and-operated stations and nearly 200 affiliates throughout the United States and its territories , some of which are also available in Canada via pay-television providers or in border areas over-the-air ; NBC also maintains brand licensing agreements for international channels in South Korea and Germany .