Unable to find any PTR-records for the specified domain/ip :(
Log
+000
Resolving PTR record of '198.67.1.0'
+141
ERRNo PTR record availible DNS server 'ns2-auth.sprintlink.net' raised an NotExistentDomain error, while beeing queried for PTR-records on domain '0.1.67.198.in-addr.arpa'.