Telcosub USA LLC is a telecommunications infrastructure company based in North Miami, Florida, focused on developing and operating telecommunications facilities and connectivity infrastructure. Its services include data center services, cloud storage, network connectivity infrastructure, and submarine cable landing facilities. The company is involved in the Carnival Submarine Networks 1, or CSN 1, system, a planned high fiber count submarine cable connecting Florida with Panama, Colombia, and Ecuador. The U.S. Federal Communications Commission granted Telcosub USA and its partners a submarine cable landing license in June 2024. The CSN 1 system includes a Florida to Panama segment and a Panama to Ecuador segment, strengthening international connectivity for data centers and digital infrastructure.