Unable to find any PTR-records for the specified domain/ip :(
Log
+000
Resolving PTR record of '204.16.243.0'
+190
ERRNo PTR record availible DNS server 'ns10.teraswitch.com' raised an NotExistentDomain error, while beeing queried for PTR-records on domain '0.243.16.204.in-addr.arpa'.