http://y7egb5vi45k74makeixpfb7jnimfxm3gf233lb3ke2ldonozjk55nvad.onion/notes_on_dns.html
The DNS namespace begins
at the root “.” and portions of the root namespace are delegated as “Top
Level Domains” or “TLDs”. Popular TLDs include “com”, “net”, “org”, And
so the top portion of the contains the following (incomplete) tree: .
/ | \
/ | \
com net org The root is owned by “ICANN”, a Yankee corporation formed for the
purpose, and Domain Registrars assign people portions of the namespace
below “TLDs” for a fee.