Cogent Communications Holdings, Inc., through its subsidiaries, provides high-speed Internet access, private network, and data center colocation space services in North America, Europe, Asia, South America, Australia, and Africa.

IDT Corporation operates in the communications and payment industries in the United States and internationally. The company operates through three segments: Fintech; net2phone-UCaaS (Unified Communications as a Service); and Traditional Communications.

Cable One, Inc., together with its subsidiaries, provides data, video, and voice services in the United States. The company offers residential data services, a service to enhance Wi-Fi signal throughout the home.

InterDigital, Inc., together with its subsidiaries, designs and develops technologies that enable and enhance wireless communications in the United States, China, South Korea, Japan, Taiwan, and Europe.

ATN International, Inc., through its subsidiaries, provides telecommunications services. It operates in three segments: International Telecom, US Telecom, and Renewable Energy.

Liberty Broadband Corporation engages in the communications businesses. It operates through GCI Holdings and Charter segments. The GCI Holdings segment provides a range of wireless, data, video, voice, and managed services to residential customers, businesses, governmental entities, and educational and medical institutions primarily in Alaska under the GCI brand.

AST SpaceMobile, Inc. operates space-based cellular broadband network for mobile phones. Its SpaceMobile service provides mobile broadband services for users traveling in and out of areas without terrestrial mobile services on land, at sea, or in flight.

Lumen Technologies, Inc., a facilities-based technology and communications company, provides various integrated products and services under the Lumen, Quantum Fiber, and CenturyLink brands to business and residential customers in the United States and internationally.

Sify Technologies Limited provides integrated ICT solutions and services in India and internationally. It operates through Network Centric Services, Data Center Services, and Digital Services segments.

Charter Communications, Inc. operates as a broadband connectivity and cable operator company serving residential and commercial customers in the United States.

Liberty Broadband Corporation engages in the communications businesses. It operates through GCI Holdings and Charter segments. The GCI Holdings segment provides a range of wireless, data, video, voice, and managed services to residential customers, businesses, governmental entities, and educational and medical institutions primarily in Alaska under the GCI brand.

TIM S.A., a telecommunications company, provides mobile voice and data services, broadband internet access, value-added services, and other telecommunications services and products in Brazil.

Telefónica, S.A., together with its subsidiaries, provides telecommunications services in Europe and Latin America. The company's mobile and related services and products comprise mobile voice, value added, mobile data and Internet, wholesale, corporate, roaming, fixed wireless, and trunking and paging services.

Telefônica Brasil S.A., together with its subsidiaries, provides mobile and fixed telecommunications services to residential and corporate customers in Brazil. Its fixed line services portfolio includes local, domestic long-distance, and international long-distance calls; and mobile portfolio comprises voice and broadband internet access through 3G, 4G, 4.5G, and 5G as well as mobile value-added services and wireless roaming services.

América Móvil, S.A.B. de C.V. provides telecommunications services in Latin America and internationally. The company offers wireless and fixed voice services, including local, domestic, and international long-distance services; and network interconnection services.

SK Telecom Co., Ltd. provides wireless telecommunication services in South Korea. The company operates through three segments: Cellular Services, Fixed-Line Telecommunications Services, and Other Businesses.

Vodafone Group Public Limited Company engages in telecommunication services in Europe and internationally. The company offers mobile services that enable customers to call, text, and access data; fixed line services, including broadband, television (TV) offerings, and voice; and convergence services under the GigaKombi and Vodafone One names to customers.