Nmap scan report for richeng168.com (104.21.40.122)
Host is up (0.0010s latency).
Other addresses for richeng168.com (not scanned): 2606:4700:3033::ac43:9721 2606:4700:3034::6815:287a 172.67.151.33
Not shown: 996 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 7.08 seconds