Bulk Lookup Owner of IP Address

To perform a bulk whois lookup of a list of IP addresses use the following script: Bulk whois lookup while read ip; do if [ ! -z "$ip" ]; then echo -n "$ip - " && whois $ip 2>/dev/null grep "Organization" -m 1; fi; done < ip_list.txt Example input (ip_list.txt) 172.217.8.206 172.217.8.203 172.217.8.266 151.101.65.67 Output... » read more