Unable to find any PTR-records for the specified domain/ip :(
Log
+000
Resolving PTR record of '148.253.249.0'
+067
ERRNo PTR record availible DNS server 'y.arin.net' raised an NotExistentDomain error, while beeing queried for PTR-records on domain '0.249.253.148.in-addr.arpa'.