Frontier Communications Corporation is a telecommunications company in the United States. It was known as Citizens Utilities Company until May 2000 and Citizens Communications Company until July 31, 2008. The company previously served primarily rural areas and smaller communities, but now also serves several large metropolitan markets.
Frontier is the fourth largest provider of digital subscriber line (based on coverage area) in the United States. In addition to local and long-distance telephone service, Frontier offers broadband Internet, digital television service, and computer technical support to residential and business customers in 29 states in the United States.