Unable to find any PTR-records for the specified domain/ip :(
Log
+000
Resolving PTR record of '2a11:5ec0::'
+223
ERRNo PTR record availible DNS server 'ns-1786.awsdns-31.co.uk' raised an NotExistentDomain error, while beeing queried for PTR-records on domain '0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.c.e.5.1.1.a.2.ip6.arpa'.