The Public Suffix List
A "public suffix" is one under which Internet users can (or historically could)
directly register names. Some examples of public suffixes are .com, .co.uk and
pvt.k12.ma.us. The Public Suffix List is a list of all known public suffixes.
WWW: https://publicsuffix.org/
WWW: https://github.com/publicsuffix/list/
