Unable to find any PTR-records for the specified domain/ip :(
Log
+000
Resolving PTR record of '69.171.232.0'
+167
ERRNo PTR record availible DNS server 'b.ns.facebook.com' raised an NotExistentDomain error, while beeing queried for PTR-records on domain '0.232.171.69.in-addr.arpa'.