Starting Nmap 6.47 ( http://nmap.org ) at 2015-05-13 16:32 CEST
Nmap scan report for ntp.ien.it (193.204.114.105)
Host is up.
PORT    STATE         SERVICE
123/udp open|filtered ntp

Nmap done: 1 IP address (1 host up) scanned in 2.71 seconds