Unable to find any PTR-records for the specified domain/ip :(
Log
+000
Resolving PTR record of '116.51.16.0'
+2.812
ERRNo PTR record availible DNS server 'dns01.ntts-idc.net.sg' raised an NotExistentDomain error, while beeing queried for PTR-records on domain '0.16.51.116.in-addr.arpa'.