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Ubuntu - nmap - Scan a UDP Port

sudo nmap -sU 53 sharewiz.net

result:

Starting Nmap 6.40 ( http://nmap.org ) at 2016-07-08 00:58 BST
setup_target: failed to determine route to 53 (0.0.0.53)

Results from another machine

result:

Starting Nmap 6.40 ( http://nmap.org ) at 2016-07-08 00:56 BST
Nmap scan report for sharewiz.net (5.42.134.35)
Host is up (0.0023s latency).
rDNS record for 5.42.134.35: bbdp5.42.134.35.network.sure.com
PORT     STATE  SERVICE
53/udp   open   http
8888/udp closed sun-answerbook
Nmap done: 1 IP address (1 host up) scanned in 1.73 seconds