Performing a basic port scan (nmap -F itc-net.co.jp)
Nmap scan report for itc-net.co.jp (162.43.117.115)
Host is up (0.11s latency).
rDNS record for 162.43.117.115: sv13274.xserver.jp
Not shown: 90 filtered ports
PORT STATE SERVICE
21/tcp open ftp
25/tcp open smtp
80/tcp open http
110/tcp open pop3
143/tcp open imap
443/tcp open https
465/tcp open smtps
587/tcp open submission
993/tcp open imaps
995/tcp open pop3s
Nmap done: 1 IP address (1 host up) scanned in 4.67 seconds