Unable to find any PTR-records for the specified domain/ip :(
Log
+000
Resolving PTR record of '91.194.48.0'
+637
ERRNo PTR record availible DNS server 'ns2.cablecom.net' raised an NotExistentDomain error, while beeing queried for PTR-records on domain '0.48.194.91.in-addr.arpa'.