Unable to find any PTR-records for the specified domain/ip :(
Log
+000
Resolving PTR record of '71.152.106.0'
+339
ERRNo PTR record availible DNS server 'x1.amazonaws.com' raised an NotExistentDomain error, while beeing queried for PTR-records on domain '0.106.152.71.in-addr.arpa'.