OperatorsData
DSL falls to 37.8 per cent of Türkiye's fixed broadband subscriptions
Fibre now holds 50.5 per cent of fixed lines and cable 7.1, BTK's second-quarter table shows, while the programme puts the incumbent at 53.1.
By Link Budget, the Corridor Signal data column
Written with AI tools by Corridor Signal's editorial system; the publisher is responsible for it. How this site works
Türkiye's 2027 Presidential Annual Programme says DSL held 37.8 per cent of fixed broadband subscriptions at the end of June 2026, down from 46.4 per cent a year earlier, a fall that the regulator's second-quarter data confirm and break down.
The figures are in the sector description of the programme published in the Official Gazette on 27 October. It adds that cable internet stayed flat at 7.1 per cent over the same period and that the incumbent operator's share of the fixed market stood at 53.1 per cent in June 2026. The Information and Communication Technologies Authority (BTK) published the underlying market data report on 30 September, and its table is below.
| Fixed broadband, subscriptions | Q2 2025 | Q2 2026 | Change, per cent | Share Q2 2026, per cent |
|---|---|---|---|---|
| xDSL | 9,607,418 | 8,000,522 | -16.7 | 37.8 |
| Fibre to the home (FTTH) | 7,571,719 | 9,574,321 | +26.4 | 45.2 |
| Fibre to the building (FTTB) | 1,198,850 | 1,123,968 | -6.2 | 5.3 |
| Cable internet | 1,462,907 | 1,497,363 | +2.4 | 7.1 |
| Fixed wireless | 667,110 | 780,055 | +16.9 | 3.7 |
| Other | 219,665 | 213,332 | -2.9 | 1.0 |
| Fibre, total | 8,770,569 | 10,698,289 | +22.0 | 50.5 |
| Total fixed | 20,727,669 | 21,189,561 | +2.2 | 100.0 |
Shares, the total row and the Q2 2025 composition are a Corridor Signal calculation from BTK's subscription counts; the change column for each technology is BTK's own. The total of 21,189,561 matches the 21.2 million fixed subscriptions in the report's foreword, and the same sums reproduce the programme's 46.4 and 37.8 per cent for DSL.
DSL lost 1,606,896 lines in the year, while fibre added 1,927,720, so fibre's gain exceeded DSL's loss by 320,824 on a Corridor Signal calculation. On Corridor Signal calculations from the same table, the fixed market as a whole grew by 461,892 lines, or 2.2 per cent, and fibre's share rose from 42.3 per cent a year earlier to the 50.5 per cent BTK reports. DSL fell 4.2 per cent in the quarter alone, against 16.7 per cent over twelve months, and fibre to the home grew 26.4 per cent over the year while fibre to the building shrank 6.2 per cent.
The programme's table of broadband indicators, on page 226, gives a different aggregate, covering fixed and mobile together. It lists broadband subscriptions of 96,383 thousand in 2024 and 97,443 thousand in 2025, with 98,500 thousand estimated for 2026 and 101,000 thousand set as the 2027 programme figure. Density, given in per cent, runs at 112, 113, 114 and 116 across the four years. For June 2026 the programme's text gives 100.8 million broadband subscriptions, up 3.5 per cent, while BTK's table gives 100,846,626 against 97,361,083, which is 3.6 per cent.
The programme does not name the incumbent. BTK's market share table lists TTNet first with 53.07 per cent of fixed broadband subscribers and 54.73 per cent of revenue, followed by Superonline with 15.06 per cent of subscribers and 18.50 per cent of revenue, and Turksat with 7.40 and 3.26 per cent. Turknet holds 6.92 per cent of subscribers and Vodafone Net 6.14 per cent. Internet service providers also accounted for 51.6 per cent of the complaints BTK received in the quarter, as the complaints piece reported.
Copper retirement has also begun in Kazakhstan, where Turkestan became the first Kazakh city to retire ADSL lines. Separately, Türk Telekom signed a $1bn club loan on 26 October for 5G and fibre.
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