Crown Castle

Crown Castle International Corp. is an American corporation headquartered in Houston, Texas, which provides infrastructure for broadcasting, mobile telephony and wireless broadband including small cell, traditional cell sites, rooftop sites and indoor/outdoor distributed antenna systems. It operates in the United States and Puerto Rico. It provides mobile telephone coverage to all of the top 100 markets in the US on behalf of service providers such as Verizon, AT&T Mobility, Sprint and T-Mobile. In 2015, the company ranked #166 in the S&P 500 index.