Forwarding domainname

Hi,

I just received control over the domainname mozilla.frl.
The control panel has the option to forward the domain to another website and I’d like to use https://www.mozilla.org/fy-NL/ for now and maybe later on build my own community website.
There are 2 options, transparent an not transparent. Transparent loads the page in an iframe, but this does not work with the https-site from Mozilla.
Is there a way to keep www.mozilla.frl in the addressbar?

Moved this to Community Ops category. I believe that this is more an Ops question and in any case I know the people watching should be able to help answer you.