Nmap scan report for richchao.com (52.217.230.245)
Host is up (0.056s latency).
Other addresses for richchao.com (not scanned): 52.217.160.213 54.231.229.109 3.5.16.43 52.217.0.18 52.217.88.59 52.217.197.189 52.217.0.106
rDNS record for 52.217.230.245: s3-website-us-east-1.amazonaws.com
Not shown: 999 filtered tcp ports (no-response)
PORT   STATE SERVICE
80/tcp open  http

Nmap done: 1 IP address (1 host up) scanned in 6.96 seconds