Nmap scan report for cdn-fast.dewu.com (47.246.23.237) Host is up (0.0075s latency). Other addresses for cdn-fast.dewu.com (not scanned): 2404:2280:1b4:0:3::3f2 47.246.23.232 47.246.23.233 47.246.23.234 47.246.23.235 47.246.23.236 47.246.23.238 47.246.23.231 Not shown: 996 filtered tcp ports (no-response) PORT STATE SERVICE 80/tcp open http 443/tcp open https 843/tcp open unknown 1935/tcp open rtmp Nmap done: 1 IP address (1 host up) scanned in 6.07 seconds