Unlimited subdomains addon

I'd like to know if it's possible to activate the unilmited subdomain add on with my website's alternative url (http://accountname.webXXX.discountasp.net) in order to test some functionality before activating the subdomains of the real domain.

For example, if I create a subdomain called "subdomain1", can I test it using http://subdomain1.accountname.webXXX.discount.net, before actually activating http://subdomain1.mydomain.com?

Thanks in advance.

 

Thanks for such quick response, Tasslehoff
Regards,