Unable to find any PTR-records for the specified domain/ip :(
Log
+000
Resolving PTR record of '155.60.128.0'
+173
ERRNo PTR record availible DNS server 'ns1.national.com.au' raised an NotExistentDomain error, while beeing queried for PTR-records on domain '0.128.60.155.in-addr.arpa'.