Unable to find any PTR-records for the specified domain/ip :(
Log
+000
Resolving PTR record of '18.34.64.0'
+201
ERRNo PTR record availible DNS server 'z.arin.net' raised an NotExistentDomain error, while beeing queried for PTR-records on domain '0.64.34.18.in-addr.arpa'.