Unable to find any PTR-records for the specified domain/ip :(
Log
+000
Resolving PTR record of '2602:817:4::'
+193
ERRNo PTR record availible DNS server 'x.arin.net' raised an NotExistentDomain error, while beeing queried for PTR-records on domain '0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.4.0.0.0.7.1.8.0.2.0.6.2.ip6.arpa'.