Nmap scan report for class.ipb.ac.id (202.124.205.200)
Host is up (0.20s latency).
Not shown: 96 filtered tcp ports (no-response)
PORT     STATE  SERVICE
53/tcp   closed domain
80/tcp   open   http
443/tcp  open   https
8080/tcp closed http-proxy

Nmap done: 1 IP address (1 host up) scanned in 9.07 seconds