Performing a basic port scan (nmap -F literate-computing.github.io)
Nmap scan report for literate-computing.github.io (185.199.109.153)
Host is up (0.00036s latency).
Other addresses for literate-computing.github.io (not scanned): 2606:50c0:8000::153 2606:50c0:8003::153 2606:50c0:8002::153 2606:50c0:8001::153 185.199.110.153 185.199.111.153 185.199.108.153
rDNS record for 185.199.109.153: cdn-185-199-109-153.github.com
Not shown: 98 filtered ports
PORT STATE SERVICE
80/tcp open http
443/tcp open https
Nmap done: 1 IP address (1 host up) scanned in 5.87 seconds