Unable to find any PTR-records for the specified domain/ip :(
Log
+000
Resolving PTR record of '89.50.0.0'
+396
ERRNo PTR record availible DNS server 'dns.mcbone.net' raised an NotExistentDomain error, while beeing queried for PTR-records on domain '0.0.50.89.in-addr.arpa'.