Unable to find any PTR-records for the specified domain/ip :(
Log
+000
Resolving PTR record of '194.42.97.0'
+213
ERRNo PTR record availible DNS server 'ns-1787.awsdns-31.co.uk' raised an NotExistentDomain error, while beeing queried for PTR-records on domain '0.97.42.194.in-addr.arpa'.