Masscan
From Federal Burro of Information
scan lots of ips quick
https://github.com/robertdavidgraham/masscan
root@keres /home/david/work/masscan/bin # ./masscan 192.168.1.0/24 -p22 Starting masscan 1.0.3 (http://bit.ly/14GZzcT) at 2015-11-28 20:19:40 GMT -- forced options: -sS -Pn -n --randomize-hosts -v --send-eth Initiating SYN Stealth Scan Scanning 256 hosts [1 port/host] Discovered open port 22/tcp on 192.168.1.28 Discovered open port 22/tcp on 192.168.1.110 Discovered open port 22/tcp on 192.168.1.99 root@keres /home/david/work/masscan/bin # ./masscan 192.168.1.0/24 -p443 Starting masscan 1.0.3 (http://bit.ly/14GZzcT) at 2015-11-28 20:19:59 GMT -- forced options: -sS -Pn -n --randomize-hosts -v --send-eth Initiating SYN Stealth Scan Scanning 256 hosts [1 port/host] Discovered open port 443/tcp on 192.168.1.110 Discovered open port 443/tcp on 192.168.1.99 Discovered open port 443/tcp on 192.168.1.28 root@keres /home/david/work/masscan/bin #