Unable to find any PTR-records for the specified domain/ip :(
Log
+000
Resolving PTR record of '2600:9000:22fe::'
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ERRNo PTR record availible DNS server 'x1.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.e.f.2.2.0.0.0.9.0.0.6.2.ip6.arpa'.