Unable to find any PTR-records for the specified domain/ip :(
Log
+000
Resolving PTR record of '64.238.5.0'
+187
ERRNo PTR record availible DNS server 'ns-752.awsdns-30.net' raised an NotExistentDomain error, while beeing queried for PTR-records on domain '0.5.238.64.in-addr.arpa'.