Your SSL certificate is associated only with the domain that you registered with us or the domain that you already had and provided at the time of purchasing the service.
Suppose that the domain that you acquired with us or provided to us at the time of your purchase is yourdomain.com, then the SSL certificate will be associated with this domain of the form (www.)yourdomain.com and you will be able to see in your web browser (https://www.)yourdomain.com
When you have several domains pointing to your website, suppose yourdomain.net and yourdomain.org, and your visitors use these other domains to get to your website, they will be automatically redirected to (https://www.)yourdomain.com
, this ensures that they will always move through your website under the domain that is associated with your SSL certificate.
But there is more, when we configure your account, we do so that it is only necessary to enter the name of your domain, or the name of the other domains that point to your website, without any prefix.