 The company is headquartered in Los Angeles.Univision, previously known as Hispanic Broadcasting Corp. (between 2000 and September 22, 2003) and Heftel Broadcasting Corp, was the result of a February 14, 1997 merger of Tichenor Media System, Inc. a private company based in Dallas, Texas and Heftel Broadcasting, a public company based in Las Vegas, Nevada.Tichenor had been in broadcasting since the 1940s.