Nmap scan report for rr3---sn-2a5thxqp5-jb3l.googlevideo.com (110.50.81.206) Host is up (0.19s latency). rDNS record for 110.50.81.206: cache.google.com Not shown: 998 filtered tcp ports (no-response) PORT STATE SERVICE 80/tcp open http 443/tcp open https Nmap done: 1 IP address (1 host up) scanned in 17.28 seconds