Unable to find any PTR-records for the specified domain/ip :(
Log
+000
Resolving PTR record of '68.79.128.0'
+245
ERRNo PTR record availible DNS server 'ns2.ameritech.net' raised an NotExistentDomain error, while beeing queried for PTR-records on domain '0.128.79.68.in-addr.arpa'.