Domain Information
The first point of presence on the Internet may be the SSL certificate from the company’s main website that we can examine.

Subdomain Enumeration using certificate

Certificate Transparency
curl -s https://crt.sh/\?q\=<domain>\&output\=json | jq .
curl -s https://crt.sh/\?q\=<domain>\&output\=json | jq . | grep name | cut -d":" -f2 | grep -v "CN=" | cut -d'"' -f2 | awk '{gsub(/\\n/,"\n");}1;' | sort -u
Company Hosted Servers
for i in $(cat subdomainlist);do host $i | grep "has address" | grep inlanefreight.com | cut -d" " -f1,4;done
Shodan - IP List
for i in $(cat subdomainlist);do host $i | grep "has address" | grep inlanefreight.com | cut -d" " -f4 >> ip-addresses.txt;done
for i in $(cat ip-addresses.txt);do shodan host $i;doneDNS Records
dig any <domain>