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GCI Liberty, Inc., together with its subsidiaries, provides various communication services in the United States. The company offers data, wireless, video, voice, and managed services to residential customers, businesses, governmental entities, and educational and medical institutions primarily in Alaska under the GCI brand. It also operates a digital invitation platform that provides custom display advertising, native advertising content, custom video, and brand partnership services. The company is based in Englewood, Colorado.

KT Corporation provides integrated telecommunications and platform services in Korea and internationally. The company offers fixed-line telephone services, including local, domestic long-distance, international long-distance, and voice over Internet protocol telephone services, as well as interconnection services; broadband Internet access service and other Internet-related services; and data communication services, such as fixed-line and leased line services, as well as broadband Internet connection services. It also provides media and content services, including IPTV, satellite TV, digital music, e-commerce, online advertising consulting, and web comics and novels services; and credit card processing and other financial services. In addition, the company offers information technology and network services, and satellite services; sells handsets and miscellaneous telecommunications equipment; develops and sells residential units and commercial real estate; and rents real estate properties. Further, it maintains public telephones; offers security, B2C and B2B, investment fund, software development and data processing, value added network, call center, system integration and maintenance, marketing, PCS distribution, truck transportation and trucking arrangement business, cloud system implementation, satellite communication network, installation and management, and data center development and related services. Additionally, the company is involved in the Internet banking ASP and security solutions, residential building development and supply, sports team management, technology business finance, and submarine cable construction and maintenance businesses. The company was formerly known as Korea Telecom Corp. and changed its name to KT Corporation in March 2002. KT Corporation was founded in 1981 and is headquartered in Seongnam, South Korea.

Telekom Austria AG is a holding company, which engages in the provision of telecommunications and multimedia services. It operates through the following geographical segments: Austria, Bulgaria, Croatia, Belarus, Slovenia, Serbia, North Macedonia, and Corporate and Other. Its products include voice, mobile, satellite, data, and roaming. The company was founded in July 1998 and is headquartered in Vienna, Austria.

TIM SA /BR/ engages in providing mobile telephony, internet, and media telecommunication services. The company is headquartered in Rio de Janeiro, Brazil.

Zayo Group Holdings, Inc., through its subsidiaries, provides bandwidth infrastructure solutions for the communications industry in the United States, Canada, and Europe. The company operates in six segments: Fiber Solutions, Transport, Enterprise Networks, Zayo Colocation (zColo), Allstream, and Other. The Fiber Solutions segment provides dark fiber, and fiber-to-the-tower and small cell mobile infrastructure services for carriers and other communication service providers, Internet service providers, wireless service providers, media and content companies, large enterprises, and other companies. The Transport segment offers lit bandwidth infrastructure solutions comprising wavelength, Ethernet, wholesale IP services, and SONET services through its metro, regional, and long-haul fiber networks for carriers, content providers, financial services companies, healthcare, government entities, education institutions, and other medium and large enterprises. The Enterprise Networks segment provides connectivity and telecommunications solutions comprising Internet, wide area networking products, managed products, and cloud based computing and storage offerings to medium and large enterprises. The Zayo Colocation (zColo) segment offers data center infrastructure solutions consisting of colocation space, and power and interconnection services to a range of enterprise, carrier, cloud, and content customers. The Allstream segment provides cloud VoIP and data solutions, such as voice offerings; and unified communications, as well as telecommunications services, including Ethernet, and IP/MPLS VPN solutions. The Other segment provides network and technical resources to customers in designing, acquiring, and maintaining their networks. Zayo Group Holdings, Inc. was founded in 2007 and is headquartered in Boulder, Colorado.