Performing a basic port scan (nmap -F go4clients.co)
Nmap scan report for go4clients.co (208.115.54.191)
Host is up (0.063s latency).
Not shown: 90 filtered tcp ports (no-response), 7 filtered tcp ports (host-prohibited)
PORT STATE SERVICE
80/tcp open http
443/tcp open https
8443/tcp open https-alt
Nmap done: 1 IP address (1 host up) scanned in 2.29 seconds