Star Wars Reverse DNS
My first exposure to this was via a FB post from Tony Gabel. A bit of Command Line Magic makes the process almost painless, but removes the magic of finding the hidden host names via traceroute. As noted in Tony’s post, it takes a certain amount of network geekiness to appreciate the way the lines appear.
NB: A similar technique can be used starting at obiwan.scrye.net RR
( seq 1 8 200 ; seq 6 8 200 ) | sort -n | xargs -I{} -n 1 dig +short -x 206.214.251.{}