Cellnex Telecom SA is a Spain-based company engaged in the wireless telecommunications (telecom) business. Its activities are divided into three segments: Broadcasting infrastructure, Telecom site rental, as well as Network services and other. The Broadcasting infrastructure division comprises distribution and transmission of television (TV) and frequency modulation (FM) radio signals, operation and maintenance (O&M) of radio broadcasting network, as well as over-the-top (OTT) radio services, among others. The Telecom site rental division provides access to wireless infrastructure, primarily through infrastructure hosting and telecom equipment co-location, mainly for mobile network operators and other wireless and broadband telecom network operators. The Network services and other division offers connectivity services for a variety of telecom operators and radio communication, among others. The Company also develops 5th generation mobile networks (5G) through Alticom BV.

Infrastrutture Wireless Italiane SpA, also known as Inwit, is an Italy-based company primarily engaged in telecommunication industry. The Company is active in the operation of wireless telecom facilities and equipment, specifically those dedicated to the hospitality of radio transmission equipment, telecommunications and distribution of television and radio signals. It owns radio transmission equipment for mobile telephony networks. Infrastrutture Wireless Italiane SpA concerns mainly its activities relating to the construction and management of passive infrastructure sites, generally consist of civilian facilities, such as towers , trellises and poles, as well as technological systems, necessary to accommodate the equipment of receiving and transmitting, owned by Telecom Italy and other customers. It operates through Gestione Due Srl.