Registrars and DNS providers are often wary of taking domains down and will look at the contents and legitimacy of any requests to do so. And for a registrar or

Registrars and DNS providers are often wary of taking domains down and will look at the contents and legitimacy of any requests to do so. And for a registrar or DNS host to take tetr.io down, the domain name or content it points to would need to include the word 'tetris', which it does not.