Specify specific port types and numbers with nmap to scan.
sudo nmap -p T8888,80 sharewiz.net
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 80/tcp open http 8888/tcp closed sun-answerbook Nmap done: 1 IP address (1 host up) scanned in 1.73 seconds