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Nmap scan report for det-exam-media-data-prod.duolingo.com (54.165.40.136) Host is up (0.061s latency). rDNS record for 54.165.40.136: ec2-54-165-40-136.compute-1.amazonaws.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 6.93 seconds