Nmap scan report for qualysguard.tw (64.39.96.133) Host is up (0.012s latency). rDNS record for 64.39.96.133: www.qualys.com Not shown: 99 filtered tcp ports (no-response) PORT STATE SERVICE 443/tcp open https Nmap done: 1 IP address (1 host up) scanned in 4.88 seconds