Unable to find any PTR-records for the specified domain/ip :(
Log
+000
Resolving PTR record of '2604:f700:1::'
+436
ERRNo PTR record availible DNS server 'ns0.vxtream.com' raised an NotExistentDomain error, while beeing queried for PTR-records on domain '0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.1.0.0.0.0.0.7.f.4.0.6.2.ip6.arpa'.