Multiple IPs to check - public DNS-resolvers will be used (Google and OpenDNS)
+055
Resolving PTR record of '205.251.242.103'
+084
PTR-record resolved in a total of 27ms. Responding DNS-server: 208.67.222.222.
+084
Resolving PTR record of '52.94.236.248'
+104
ERRNo PTR record availible DNS server '8.8.4.4' raised an NotExistentDomain error, while beeing queried for PTR-records on domain '248.236.94.52.in-addr.arpa'.
+104
Resolving PTR record of '54.239.28.85'
+131
ERRNo PTR record availible DNS server '208.67.222.222' raised an NotExistentDomain error, while beeing queried for PTR-records on domain '85.28.239.54.in-addr.arpa'.