Ruby Oneliner
ruby -e '1000.times {|i| print `nslookup #{"smsclubnet.com"}`}' | grep Address | grep -v \#53 | awk '{print $2}'>> waledac_list-IP
Resultant Product
cat waledac_list-IP | wc -l
1000
cat waledac_list-IP | sort -u | wc -l
185
185 Fast Flux IP Addresses Sampling
112.76.132.115
113.131.247.137
115.23.21.130
115.43.127.170
115.88.199.200
115.88.229.37
115.92.199.45
116.12.40.99
116.41.12.69
118.129.47.130
118.218.233.130
118.232.218.209
118.32.88.41
118.35.41.130
118.43.5.51
119.204.10.150
119.246.58.44
119.77.227.84
119.77.244.133
Reverse Look up of sample
ruby -e 'File.foreach("sample_list") {|i| print `nslookup #{i}`}'
** server can't find 51.5.43.118.in-addr.arpa.: NXDOMAIN
Server: 208.67.222.222
Address: 208.67.222.222#53
** server can't find 150.10.204.119.in-addr.arpa.: NXDOMAIN
Server: 208.67.222.222
Address: 208.67.222.222#53
** server can't find 44.58.246.119.in-addr.arpa.: NXDOMAIN
Server: 208.67.222.222
Address: 208.67.222.222#53
** server can't find 84.227.77.119.in-addr.arpa.: NXDOMAIN
Server: 208.67.222.222
Address: 208.67.222.222#53
** server can't find 133.244.77.119.in-addr.arpa.: NXDOMAIN
