Gambling regulators in the Netherlands have issued more six-figure fines against online casino operators serving Dutch punters without Dutch permission.

On Friday, the Kansspelautoriteit (KSA) gaming authority announced a total of €350k in fines levied against Curacao-based CyberRock Entertainment NV and Cyprus-based Honeydew Trading Ltd, which share common ownership.

The KSA cites seven gambling sites operated by the two parties, including Play2wincasino.com, Supremeplay.com, Casinofiz.com, Eurofortunegames.com, Rockbet.com, Vanguardscasino.com and Vegasdays.com. The KSA claims these websites were “almost entirely Dutch” through their use of language options and the Dutch-friendly iDeal online payment processor.

The KSA has aggressively penalized numerous other sites for similar infractions in recent years, and has significantly ramped up its enforcement efforts over the past few months. The Netherlands is in the process of (very slowly) liberalizing its online gambling market and senior government officials have suggested that penalized operators may have to serve an unspecified ‘time out’ before they’ll be eligible to even apply for a new Dutch license.