You can bypass YouTube ads by adding a dot after the domain
Tangential rant: I hate it when sites ask for your domain name (eg. for setting up hosting) and say that they want the "fully qualified domain name", but they don't actually accept the FQDN. eg. they reject "www.example.com.", but accept "www.example.com" (without the trailing dot). But the FQDN by definition includes the trailing dot. https://en.wikipedia.org/wiki/Fully_qualified_domain_name