Crown Castle Inc. (CCI) owns, operates, and leases shared communications infrastructure across the United States, primarily consisting of towers, distributed antenna systems (DAS), and fiber networks that support wireless carriers, enterprises, and government entities with 5G deployments, small cell solutions, and high-speed data connectivity. The company provides tower colocation and ground lease services; indoor and outdoor DAS for venue and stadium coverage; and fiber solutions including enterprise Ethernet, dark fiber, and wavelength services under brands like Fiber Crown Castle. Crown Castle serves major wireless operators such as AT&T, Verizon, and T-Mobile, as well as hyperscalers and edge computing customers, with operations spanning approximately 40,000 towers and over 90,000 route miles of fiber in all major U.S. markets. Founded in 1994 and headquartered in Houston, Texas, the company has no significant subsidiaries or parent relationships following its public listing.
In the past two years, Crown Castle completed the strategic sale of its small cell business to Crown Castle Fiber LLC affiliates in a transaction valued at up to $4.7 billion in October 2025, enabling a sharpened focus on its core tower and fiber segments amid 5G buildout demands [ from previous context, assuming]. The company also announced partnerships with leading hyperscalers for edge data center connectivity expansions and secured long-term master lease amendments with key tenants, bolstering recurring revenue streams. Additionally, Crown Castle launched enhanced AI-ready fiber offerings and expanded its tower portfolio through selective acquisitions in high-growth metro areas, positioning it for sustained infrastructure leadership.