#IP RANGE BY CLASS #CLASS A 1-9.0.0.0/8 11-127.0.0.0/8 #PRIVATE 10.0.0.0-10.255.255.255 #CLASS B 128-171.0.0.0/8 172.0-15.0.0/16 172.32-255.0.0/16 173-191.0.0.0/8 #PRIVATE 172.16.0.0-172.31.255.255 #PRIVATE APIPA 169.254.0.0-169.254.255.255 #CLASS C 192.0-167.0.0/16 192.169-255.0.0/16 193-223.0.0.0/8 #PRIVATE 192.168.0.0-192.168.255.255 #SPECIAL 127.0.0.1-127.255.255.255 #CLASS D 224-239.0.0.0.0/8 #CLASS E 240-255.0.0.0/8 #nmap -sn -n -r -vv