Scan multiple ports using the -p option.

sudo nmap -p 80,443 sharewiz.net

result:

Starting Nmap 6.40 ( http://nmap.org ) at 2016-07-08 01:13 BST
Nmap scan report for sharewiz.net (5.42.134.35)
Host is up (0.0019s latency).
rDNS record for 5.42.134.35: bbdp5.42.134.35.network.sure.com
PORT    STATE SERVICE
80/tcp  open  http
443/tcp open  https
 
Nmap done: 1 IP address (1 host up) scanned in 2.32 seconds