Help: Which certificate protects the domain and subdomains?

Let's assume that you have a domain and a shop at

You can protect both of these pages with one SSL certificate, but it must be a WILDCARD certificate. We offer just such a certificate - Rapid SSL Wildcard.

However, you should know that the certificate does protect subdomains, but only the first-level. This means, that it will work at the address and, but it will no longer protect the address https: //, because such an address is already a second-level subdomain (to put it as colloquially as possible - it has two dots before the address of the domain itself).

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