Specifying the subdomain for your SSL certificate
Once you purchase your single-address SSL certificate, you may be wondering where you enter the name of your subdomain (ex. secure.example.com or admin.example.com, or bad.example.com etc.).
Do not worry if you only see the domain in your list of SSL certificates to activate. This is normal.
You will specify the name of your subdomain when you generate the CSR. It is on this line:
Common Name (eg, YOUR name) : subdomain.example.com
Once you have done this and provided your CSR to Gandi using the process described on the CSR wiki page, we will then be able to read the CSR and obtain your subdomain.