SBA Communications Corp. is a real estate investment trust, which engages in the provision of wireless communications infrastructures. The company is headquartered in Boca Raton, Florida and currently employs 1,787 full-time employees. The Company’s primary focus is the leasing of antenna space on its multi-tenant towers to a variety of wireless service providers under long-term lease contracts in the United States, South America, Central America, Canada, South Africa, the Philippines, and Tanzania. The company operates through two segments: Domestic Site Leasing and International Site Leasing. Domestic Site Leasing segment leases to T-Mobile, AT&T Wireless, Verizon Wireless, and DISH Wireless. The segment owns approximately 17,487 sites in the United States and its territories. The International Site Leasing segment owns and operates approximately 22,131 towers in 14 international markets throughout South America, Central America, Canada, South Africa, the Philippines, and Tanzania.