Legitimate online casinos add the logo of the relevant regulatory body to the footer of the website. You can also find out if the casino is included in the register of issued licenses by contacting the regulatory body.  Copy this link for that https://kansspelautoriteit/veilig-spelen/veilig-online-gokken/. click on it and enter the name of the web casino in the search box. If the operator is approved, the system will provide a link to the official website of the club in New Zealand.