There are also sponsored TLDs(.edu, .gov), generic restricted(.biz), and the single infrastructure TLD .arpa. https://www.iana.org/domains/root/db https://www.

There are also sponsored TLDs(.edu, .gov), generic restricted(.biz), and the single infrastructure TLD .arpa. https://www.iana.org/domains/root/db https://www.iana.org/domains/root/db