Unable to find any PTR-records for the specified domain/ip :(
Log
+004
Resolving PTR record of '12.0.120.0'
+102
ERRNo PTR record availible DNS server 'cbru.br.ns.els-gms.att.net' raised an NotExistentDomain error, while beeing queried for PTR-records on domain '0.120.0.12.in-addr.arpa'.