Unable to find any PTR-records for the specified domain/ip :(
Log
+000
Resolving PTR record of '69.52.220.0'
+197
ERRNo PTR record availible DNS server 'ns2.blackrock.com' raised an NotExistentDomain error, while beeing queried for PTR-records on domain '0.220.52.69.in-addr.arpa'.