Nmap scan report for external-yyz1-1.xx.fbcdn.net (31.13.80.12)
Host is up (0.069s latency).
Other addresses for external-yyz1-1.xx.fbcdn.net (not scanned): 2a03:2880:f00e:13:face:b00c:0:3
rDNS record for 31.13.80.12: xx-fbcdn-shv-01-yyz1.fbcdn.net
Not shown: 995 filtered tcp ports (no-response)
PORT STATE SERVICE
80/tcp open http
443/tcp open https
843/tcp closed unknown
5222/tcp closed xmpp-client
8443/tcp closed https-alt
Nmap done: 1 IP address (1 host up) scanned in 6.78 seconds