Perhaps a more interesting question, and one which I
cannot quickly answer
(nor am I going to go pinging huge swaths of the public internet), is are
there any hosts in any version of HOSTS.TXT that are still on the public
internet in the same location?
Hard to answer the question. Same physical location? Same hardware?
mit-prep.arpa is
prep.ai.mit.edu which is a CNAME to
ftp.gnu.org Theseus's
ship?