You have to find many IP addresses or CIDR ranges of the company using the methods from DAY 5-6
asnmap : a tool for getting CIDR ranges belonging to a particular ASN number.mapcidr : this tool will give all the ip addresses of any CIDR.dnsx : this tool will do reverse DNS lookup, and find hostnames for the ip addresses we give.
-ptr for reverse domain lookup.naabu : it scans for open ports on given host.
masscan : used to scan for big networks real quick.
rustscan : same use as masscan .