Unable to find any PTR-records for the specified domain/ip :(
Log
+000
Resolving PTR record of '16.12.32.0'
+223
ERRNo PTR record availible DNS server 'x3.amazonaws.org' raised an NotExistentDomain error, while beeing queried for PTR-records on domain '0.32.12.16.in-addr.arpa'.