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Advanced Info Service Public Company Limited, together its subsidiaries, provides communication products and services primarily in Thailand. It is involved in the operation of cellular telephone networks, networks, and telecommunication and internet services. The company also distributes handsets; cash cards and electronic payment services; and internet equipment. In addition, it provides international telephone, broadcasting network, and television broadcasting services for various channels; and digital platform, as well as insurance brokerage services. Further, the company offers IT system service development, content aggregator, and billing and collection outsourcing services; call center services; and space, and land and building services, as well as related facilities. Additionally, it provides internet data center, and internet and satellite uplink-downlink services for communications; mobile contents, application development, and digital marketing services; fixed-line services and data communication network services; software development services; online domain names; services of infrastructure development of fibre optic networks; and training and online advertising services. The company is involved in resale of mobile phone, voice over internet phone, and leased circuit services. Advanced Info Service Public Company Limited was founded in 1986 and is headquartered in Bangkok, Thailand.

Koninklijke KPN N.V. provides telecommunications and information technology (IT) services in the Netherlands. It operates through Consumer; Business; Wholesale; and Network, Operations & IT segments. The company offers fixed and mobile telephony, fixed and mobile broadband internet, and television services to retail and business consumers; infrastructure and network related IT solutions to business customers; and wholesale network services to third parties. It also provides IT services, including cloud, workspace, and cybersecurity services; interconnect traffic, visitor roaming, and digital products; and NL-ix, an interconnect exchange, as well as sells handsets, peripheral equipment, and software licenses. In addition, the company offers virus and malware scanners; anti-virus licenses; 1Password, a password management tool; DNSSEC, a technology that prevents customers from being led to fake websites; KPN Veilig Netwerk Thuis, a smart network security; Censornet, which includes web security, cloud application security broker, email protection, and awareness training; SuperVision, which provides digital governance solutions for workspaces; and OneMonitoring to ensure early detection of cyber incidents. Further, it provides fiber networks; and IT services for integrating healthcare systems and optimizing communication between healthcare providers. The company distributes its products and services under the KPN, XS4ALL, Simyo, KPN Security, KPN Health, Solcon, Inspark, and KPN Partner Network brands. The company was formerly known as Koninklijke PTT Nederland NV and changed its name to Koninklijke KPN N.V. in June 1998. Koninklijke KPN N.V. was founded in 1881 and is headquartered in Rotterdam, the Netherlands.

Koninklijke KPN N.V. provides telecommunications and information technology (IT) services in the Netherlands. It operates through Consumer; Business; Wholesale; and Network, Operations & IT segments. The company offers fixed and mobile telephony, fixed and mobile broadband internet, and television services to retail and business consumers; infrastructure and network related IT solutions to business customers; and wholesale network services to third parties. It also provides IT services, including cloud, workspace, and cybersecurity services; interconnect traffic, visitor roaming, and digital products; and NL-ix, an interconnect exchange, as well as sells handsets, peripheral equipment, and software licenses. In addition, the company offers virus and malware scanners; anti-virus licenses; 1Password, a password management tool; DNSSEC, a technology that prevents customers from being led to fake websites; KPN Veilig Netwerk Thuis, a smart network security; Censornet, which includes web security, cloud application security broker, email protection, and awareness training; SuperVision, which provides digital governance solutions for workspaces; and OneMonitoring to ensure early detection of cyber incidents. Further, it provides fiber networks; and IT services for integrating healthcare systems and optimizing communication between healthcare providers. The company distributes its products and services under the KPN, XS4ALL, Simyo, KPN Security, KPN Health, Solcon, Inspark, and KPN Partner Network brands. The company was formerly known as Koninklijke PTT Nederland NV and changed its name to Koninklijke KPN N.V. in June 1998. Koninklijke KPN N.V. was founded in 1881 and is headquartered in Rotterdam, the Netherlands.

Lumen Technologies, Inc., a facilities-based technology and communications company, provides various integrated products and services to business and residential customers in the United States and internationally. The company operates in two segments, Business and Mass Markets. It offers dark fiber, edge cloud services, internet protocol, managed security, software-defined wide area networks, secure access service edge, unified communications and collaboration, and optical wavelengths services; ethernet and VPN data networks services; and legacy services to manage cash flow, including time division multiplexing voice, private line, and other legacy services, as well as sells communication equipment, and IT solutions. The company also provides high speed and lower speed broadband service to residential and small business customers; local and long-distance voice services, professional services, and other ancillary services; and federal broadband and state support programs. It serves its products and services under the Lumen, Quantum Fiber, and CenturyLink brands. The company was formerly known as CenturyLink, Inc. and changed its name to Lumen Technologies, Inc. in September 2020. Lumen Technologies, Inc. was incorporated in 1968 and is headquartered in Monroe, Louisiana.

Telefônica Brasil S.A., together with its subsidiaries, operates as a mobile telecommunications company 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 and wireless roaming services. The company also offers data services, including broadband and mobile data services. In addition, it provides pay TV services through IPTV technologies; network services, such as rental of facilities; other services comprising internet access, private network connectivity, computer equipment leasing, extended service, caller identification, voice mail, cellular blocker, and others; wholesale services, including interconnection services to users of other network providers; and digital services, such as entertainment, cloud, and security and financial services. Further, the company offers multimedia communication services, which include audio, data, voice and other sounds, images, texts, and other information, as well as sells devices, such as smartphones, broadband USB modems, and other devices. Additionally, it provides telecommunications solutions and IT support to various industries, such as retail, manufacturing, services, financial institutions, government, etc. It markets and sells its solutions through own stores, dealers, retail and distribution channels, door-to-door sales, and outbound tele sales. The company was formerly known as Telecomunicações de São Paulo S.A. - TELESP and changed its name to Telefônica Brasil S.A. in October 2011. The company was incorporated in 1998 and is headquartered in São Paulo, Brazil.