Performing a basic port scan (nmap -F callfire.com)
Nmap scan report for callfire.com (34.133.19.111)
Host is up (0.047s latency).
Other addresses for callfire.com (not scanned): 34.135.103.124
rDNS record for 34.133.19.111: 111.19.133.34.bc.googleusercontent.com
Not shown: 97 filtered tcp ports (no-response)
PORT STATE SERVICE
22/tcp open ssh
80/tcp open http
443/tcp open https
Nmap done: 1 IP address (1 host up) scanned in 2.31 seconds