Crown Castle

Crown Castle is a real estate investment trust (REIT) that owns and operates shared communications infrastructure across the United States. Founded in 1994 and headquartered in Houston, Texas, the company provides the physical layer on which wireless carriers and other organisations deliver voice and data services: approximately 40,000 cell towers, small cell infrastructure, and roughly 90,000 route miles of fiber. It describes itself as the nation's largest provider of shared communications infrastructure.

The portfolio spans three principal asset types. Cell towers offer physical sites for wireless equipment. Small cells extend coverage and capacity in locations where macro towers are impractical. Fiber networks carry traffic between sites and to end users, supporting faster and more reliable wireless connectivity. Engineering and technical work at the company touches wireless communications infrastructure, cell tower and small cell networks, fiber optic networks, and the design of shared infrastructure serving multiple tenants.

Customers include wireless carriers, wireless internet service providers (WISPs), telecommunications and technology companies, venues, and firms in commercial real estate, healthcare and financial services. The company frames its purpose around the premise that wireless connectivity has become essential to modern life and business, and around keeping people and communities connected through expanded and improved wireless infrastructure.