Performing a basic port scan (nmap -F researcher-app.com)
Nmap scan report for researcher-app.com (151.101.65.41)
Host is up (0.086s latency).
Other addresses for researcher-app.com (not scanned): 151.101.129.41 151.101.193.41 151.101.1.41
Not shown: 98 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 9.50 seconds