KT 

KT Corporation is a prominent South Korean enterprise that delivers a broad spectrum of integrated telecommunications and technology platform services, operating both domestically and internationally. The company's core offerings include traditional fixed-line telephony, encompassing local, domestic long-distance, and international calling, as well as Voice over Internet Protocol (VoIP) and essential interconnection services. Furthermore, KT provides extensive broadband internet access and related online functionalities, alongside robust data communication solutions like dedicated fixed-line and leased line services. Beyond fundamental connectivity, KT is a significant participant in the media and content sector, offering services such as IPTV, satellite television, digital music, e-commerce platforms, online advertising consultation, and a diverse selection of digital comics and novels. The corporation also extends its activities into financial services, notably through credit card processing, and delivers a comprehensive suite of information technology, network management, and satellite communication services. KT engages in the sale of mobile handsets and various telecommunications equipment. It also actively participates in real estate ventures, including the development and sale of residential and commercial properties, as well as property rentals. Additionally, the company operates public telephone infrastructure and provides a wide array of specialized business and consumer solutions. These offerings include advanced security services (such as internet banking ASP and security solutions), B2B and B2C services, investment fund management, software development and data processing, value-added network (VAN) services, system integration and maintenance, mobile marketing, and PCS distribution. KT is also active in satellite broadcasting, cloud system implementation, network installation and management, and the development of data centers. Its operations further extend to technology business finance, submarine cable construction and maintenance, and the management of trunk radio systems, alongside residential building development and sports group management. As of December 31, 2020, KT demonstrated a substantial market presence, serving approximately 22.3 million mobile subscribers and 8.8 million IPTV subscribers. Established in 1981 as Korea Telecom Corp., the company officially rebranded as KT Corporation in March 2002. Its corporate headquarters are located in Seongnam, South Korea.