Turk Telekomunikasyon A.S. 

Türk Telekomünikasyon Anonim Sirketi, alongside its various subsidiaries, functions as a comprehensive telecommunications provider throughout Turkey. The enterprise is structured into two main operational divisions: Fixed Line and Mobile. Under the "Türk Telekom" brand, it extends a wide array of consumer products and services, including mobile connectivity, internet access, fixed-line telephony, and television. Beyond these core offerings, the company supplies foundational network services such as Public Switched Telephone Network (PSTN) capabilities and wholesale broadband solutions. Its diverse portfolio also encompasses retail internet services, various television delivery methods (IPTV, satellite, web, mobile, and smart TV), and video-on-demand (VOD). Türk Telekom is further engaged in information technology solutions, the development of convergence technologies, and the provision of online educational software. For business clients, it offers wholesale data and capacity services, in addition to pursuing project development and corporate venture capital initiatives. Supplemental services include the retail of telecommunication devices, electronic payment and e-money systems, web portal and computer programming development, call center operations, electricity supply and sales, facilities management, and consulting services. As of December 31, 2021, Türk Telekom reported a significant customer base across all 81 Turkish cities, serving 16.9 million fixed access lines, 14.3 million broadband connections, 2.9 million television subscribers, and 24.0 million mobile users. The company was founded in 1840 and is headquartered in Ankara, Turkey. Türk Telekomünikasyon Anonim Sirketi operates as a subsidiary of LYY Telekomünikasyon A.S.