Performing a basic port scan (nmap -F publicbroadcasting.net)
Nmap scan report for publicbroadcasting.net (64.125.77.17)
Host is up (0.069s latency).
rDNS record for 64.125.77.17: 64.125.77.17.IPYX-149521-ZYO.zip.zayo.com
Not shown: 97 filtered tcp ports (no-response)
PORT STATE SERVICE
80/tcp open http
81/tcp open hosts2-ns
443/tcp open https
Nmap done: 1 IP address (1 host up) scanned in 2.95 seconds