This kind of stuff is fun, reminds me of decimal IP addresses.

like http://3520653040 should take you to hn (atleast to the IP I'm resolving for hn right now)

Also, I know this is off topic, but that python example really bothered me.

original:

  python -c 'import sys;print sys.argv[1].decode("utf-8").encode("idna")' "℡"

Should have been

  python -c 'print "℡".decode("utf-8").encode("idna")'

Or in python3

  python -c 'print( "℡".encode("idna"))'