Unable to find any PTR-records for the specified domain/ip :(
Log
+000
Resolving PTR record of '193.72.144.0'
+420
ERRNo PTR record availible DNS server 'ns.elca.ch' raised an NotExistentDomain error, while beeing queried for PTR-records on domain '0.144.72.193.in-addr.arpa'.