Unable to find any PTR-records for the specified domain/ip :(
Log
+000
Resolving PTR record of '192.150.138.0'
+253
ERRNo PTR record availible DNS server 'ns-1821.awsdns-35.co.uk' raised an NotExistentDomain error, while beeing queried for PTR-records on domain '0.138.150.192.in-addr.arpa'.