Unable to find any PTR-records for the specified domain/ip :(
Log
+000
Resolving PTR record of '40.183.20.0'
+358
ERRNo PTR record availible DNS server 'ns4-01.azure-dns.info' raised an NotExistentDomain error, while beeing queried for PTR-records on domain '0.20.183.40.in-addr.arpa'.