On the left navigation panel, go to the section Windows Web Hosting > IIS Web Service, then click Subdomains.
Viewing the list of subdomains
The Subdomains page displays a list of all the subdomains added to and managed by your organization site.
How to go to the Subdomains page
On this page you can perform various tasks and view the following information:
Name: This is the name of the subdomain. The parent domain name (displayed next to the text box) is appended to the subdomain.
On the Subdomains page you can:
Find information by searching, sorting, or using page controls.
Add a new subdomain by clicking Add Subdomain.
Remove the subdomain by clicking Remove.