Unable to find any PTR-records for the specified domain/ip :(
Log
+000
Resolving PTR record of '204.187.73.0'
+807
ERRNo PTR record availible DNS server 'dns1.yrp.ca' raised an NotExistentDomain error, while beeing queried for PTR-records on domain '0.73.187.204.in-addr.arpa'.