Nmap scan report for upwork.com (104.18.128.226)
Host is up (0.0012s latency).
Other addresses for upwork.com (not scanned): 104.18.129.226
Not shown: 96 filtered tcp ports (no-response)
PORT     STATE SERVICE
80/tcp   open  http
443/tcp  open  https
8080/tcp open  http-proxy
8443/tcp open  https-alt

Nmap done: 1 IP address (1 host up) scanned in 2.39 seconds