Unable to find any PTR-records for the specified domain/ip :(
Log
+001
Resolving PTR record of '3.5.216.0'
+359
ERRNo PTR record availible DNS server 'pdns1.ultradns.net' raised an NotExistentDomain error, while beeing queried for PTR-records on domain '0.216.5.3.in-addr.arpa'.