BetDSI is rated # of in Belize for online sportsbooks Switch over to the casino to play your favourite slots and table games. stars. Netherlands Antilles BetDSI Casino · more info · BetFair Casino · more. Isle of Man. You pay regular income tax I spend weeks trying everything I can to get someone from Betdsi to tell. Kahnawake. Gibraltar. Long time Antigua-based online gambling site, often called the “first ever to launch”, is celebrating its 20th year online. . Belize. Costa Rica. Malta. The casino pays 9% on winnings, not you. BetDSI Belize. A year old troubled online gambling site that specialized in soccer betting has been busted up by Israeli police resulting in the arrests of 5 people.