SBA Communications Corp. is a real estate investment trust, which engages in the provision of wireless communications infrastructures. It operates through the following business segments: Domestic Site Leasing, International Site Leasing, and Site Development. The Domestic Site Leasing segment includes AT&T, Sprint, T-Mobile, and Verizon Wireless. The International Site Leasing segment acquires and develops towers. The Site Development segment is involved in consulting and construction activities. The company was founded by Steven E. Bernstein in 1989 and is headquartered in Boca Raton, FL.