Unable to find any PTR-records for the specified domain/ip :(
Log
+000
Resolving PTR record of '2a13:5241::'
+1.041
ERRNo PTR record availible DNS server 'extauth301.ns.outpost24.com' raised an NotExistentDomain error, while beeing queried for PTR-records on domain '0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.1.4.2.5.3.1.a.2.ip6.arpa'.