Unable to find any PTR-records for the specified domain/ip :(
Log
+000
Resolving PTR record of '50.114.64.0'
+132
ERRNo PTR record availible DNS server 'ns4-02.azure-dns.info' raised an NotExistentDomain error, while beeing queried for PTR-records on domain '0.64.114.50.in-addr.arpa'.