[ Thanks to Ken Guest
for this link. ]
“The domain namespace is organised in a similar structure to
the UNIX filename space. You start at the top of the tree at the
root. Immediately below the root at the Top Level Domains.
These consist of country specific ones and seven generic Top Level
Domains or gTLDs.”
“Below these domains your have the second level domain names.
These domain names are usually “delegated” by the administrators of
the relevant TLD which means that someone else is responsible for
administering that part of the name space (eg the administrators of
.ie delegated the domain linux.ie to the Irish Linux Users Group,
which means that ILUG are now responsible for administering the
domain in any way they see fit. without reference to the
administrators of .ie).”
“Once a domain is delegated, the administrators of the domain
are responsible for making changes within that domain.”