Unable to find any PTR-records for the specified domain/ip :(
Log
+000
Resolving PTR record of '32.228.168.0'
+553
ERRNo PTR record availible DNS server 'ns.de.prserv.net' raised an NotExistentDomain error, while beeing queried for PTR-records on domain '0.168.228.32.in-addr.arpa'.