Unable to find any PTR-records for the specified domain/ip :(
Log
+000
Resolving PTR record of '140.99.61.0'
+130
ERRNo PTR record availible DNS server 'ns1-08.azure-dns.com' raised an NotExistentDomain error, while beeing queried for PTR-records on domain '0.61.99.140.in-addr.arpa'.