The Czech Ministry of Finance has issued a notice proposing the addition of 21 domains to its List of Unauthorized Internet Games, continuing a series of enforcement actions against unlicensed online gambling.
The notice, published on 3 September, covers domains associated with brands including Mostbet, Zoccer, Westace and Vegashero. Sixteen are cited under Section 84a(2)(a) of the Gambling Act, while five fall under Section 84a(2)(b).
The first provision applies where a prohibited internet gambling game is operated through a website. The second covers sites whose substantial purpose is to cause, enable, facilitate or conceal a breach of the prohibition on operating prohibited internet gambling.
Affected website operators can submit objections to the Ministry within 15 days of publication of the notice. The same right applies to owners of affected payment accounts or applications.
The action forms part of an enforcement process that has been used regularly throughout 2026. The Ministry has published notices concerning intended additions to the blacklist almost weekly this year, including notices on 5, 12, 19 and 26 August.
Under Czech gambling legislation, an internet game available within the country is treated as being operated there. Changes effective from January 2024 also broadened the blacklist framework to cover websites that facilitate or conceal prohibited gambling activity, rather than only sites directly offering unauthorised games.
Internet service providers are required to block illegal sites entered on the Ministry's blacklist. The Czech Customs Administration is responsible for supervising compliance with gambling legislation and can conduct inspections and handle offences alongside the Ministry's blocking regime.
The enforcement comes as gambling activity continues to shift online. Czech players lost CZK68bn ($3.3bn) across gambling products in 2025, up 7% year-on-year.
Online gambling accounted for 60% of operators' gambling revenue, compared with 57% in 2024, while online technical games represented the country's largest segment at 34%.
In July, the Ministry added Polymarket to its blacklist, extending a wider European series of regulatory actions against the prediction market operator over its classification under gambling laws.
The Ministry maintains separate public records of authorised gambling operators and blocked websites, with its legal-operator list most recently updated for 1 September 2026
