Unable to find any PTR-records for the specified domain/ip :(
Log
+000
Resolving PTR record of '52.94.11.0'
+321
ERRNo PTR record availible DNS server 'x2.amazonaws.com' raised an NotExistentDomain error, while beeing queried for PTR-records on domain '0.11.94.52.in-addr.arpa'.