Nmap scan report for ruangguru.com (172.67.176.157)
Host is up (0.0011s latency).
Other addresses for ruangguru.com (not scanned): 2606:4700:3033::ac43:b09d 2606:4700:3033::6815:5387 104.21.83.135
Not shown: 96 filtered tcp ports (no-response)
PORT     STATE SERVICE
80/tcp   open  http
443/tcp  open  https
8080/tcp open  http-proxy
8443/tcp open  https-alt

Nmap done: 1 IP address (1 host up) scanned in 3.12 seconds