Unable to find any PTR-records for the specified domain/ip :(
Log
+000
Resolving PTR record of '2606:cd40:1::'
+271
ERRNo PTR record availible DNS server 'arin.authdns.ripe.net' raised an NotExistentDomain error, while beeing queried for PTR-records on domain '0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.1.0.0.0.0.4.d.c.6.0.6.2.ip6.arpa'.