BIST:TTKOM 10 July 2025

Turkey’s internet infrastructure comprises a mix of fixed broadband and mobile broadband networks. The fixed network has historically relied on copper DSL lines, but in recent years there’s been a major push toward fiber-optic deployment. The total length of fiber cable in Turkey expanded from about 425,000 km in 2020 to over 605,000 km by 2024, reflecting aggressive investment in fiber backbones and access networks hurriyetdailynews.com. Fiber-to-the-home/building connections have been growing rapidly – the number of fiber broadband subscribers roughly doubled between 2020 and 2024 to reach around 8.1 million hurriyetdailynews.com. Even so, DSL still accounted for the largest share of fixed lines until recently. As of end-2024, fiber connections made up an estimated 39.4% of all fixed broadband subscriptions, while DSL still held about 49.4% budde.com.au. The remainder are cable internet and fixed wireless access users. This shift toward fiber is expected to continue as operators retire old copper lines in favor of high-speed fiber networks.