Unable to find any PTR-records for the specified domain/ip :(
Log
+000
Resolving PTR record of '52.129.106.0'
+133
ERRNo PTR record availible DNS server 'ns-1590.awsdns-06.co.uk' raised an NotExistentDomain error, while beeing queried for PTR-records on domain '0.106.129.52.in-addr.arpa'.