You can manually add any email address from that list to your site’s blocked email domains setting:
Adding the full list to that setting using the Discourse UI would be a lot of work. If you really want to do it, you could enter your site’s Rails console and update the setting from there. For example:
SiteSetting.blocked_email_domains=""mailinator.com|0-mail.com|027168.com"
I think the fingerprinting plugin that Canapin has linked to would be a better approach. Also, in case it helps, make sure that you are blocking the IP addresses of any users that you want to prevent from creating new accounts when you delete them:
