Unable to find any PTR-records for the specified domain/ip :(
Log
+000
Resolving PTR record of '163.218.0.0'
+121
ERRNo PTR record availible DNS server 'rirns.arin.net' raised an NotExistentDomain error, while beeing queried for PTR-records on domain '0.0.218.163.in-addr.arpa'.