Unable to find any PTR-records for the specified domain/ip :(
Log
+000
Resolving PTR record of '2a0b:b87:ffb0::'
+121
ERRNo PTR record availible DNS server 'ns3.afrinic.net' raised an NotExistentDomain error, while beeing queried for PTR-records on domain '0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.b.f.f.7.8.b.0.b.0.a.2.ip6.arpa'.