nmap command

[root@localhost src]# nmap -sU -p 22222 127.0.0.1

Starting Nmap 5.51 ( http://nmap.org ) at 2014-11-12 20:39 KST
Nmap scan report for localhost (127.0.0.1)
Host is up (0.00015s latency).
PORT      STATE SERVICE
22222/udp open  unknown

Nmap done: 1 IP address (1 host up) scanned in 0.06 seconds
[root@localhost src]# nmap -p 5060 127.0.0.1

Starting Nmap 5.51 ( http://nmap.org ) at 2014-11-12 20:40 KST
Nmap scan report for localhost (127.0.0.1)
Host is up (0.000062s latency).
PORT     STATE  SERVICE
5060/tcp closed sip

Nmap done: 1 IP address (1 host up) scanned in 0.06 seconds