Unable to find any PTR-records for the specified domain/ip :(
Log
+000
Resolving PTR record of '2407:30c0:10c::'
+190
ERRNo PTR record availible DNS server 'apnic.authdns.ripe.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.c.0.1.0.0.c.0.3.7.0.4.2.ip6.arpa'.