Performing a basic port scan (nmap -F doutorjairo.uol.com.br)
Nmap scan report for doutorjairo.uol.com.br (200.147.36.53)
Host is up (0.17s latency).
rDNS record for 200.147.36.53: alunosonline.com.br
Not shown: 98 filtered ports
PORT STATE SERVICE
80/tcp open http
443/tcp open https
Nmap done: 1 IP address (1 host up) scanned in 7.55 seconds