Unable to find any PTR-records for the specified domain/ip :(
Log
+000
Resolving PTR record of '2600:1f1f:4800::'
+090
ERRNo PTR record availible DNS server 'x2.amazonaws.com' raised an NotExistentDomain error, while beeing queried for PTR-records on domain '0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.8.4.f.1.f.1.0.0.6.2.ip6.arpa'.