What is a wildcard SSL certificate?

When choosing a paid SSL certificate, you can see that they are divided into 2 types - those that support and those that do not support wildcard .

The effect of wildcard SSL certificates extends not only to the main domain for which the certificate is ordered, but also to all its subdomains that have already been created or will be created later.

Usually, wildcard certificates are chosen by owners of sites with a large number of subdomains, because in this case it is enough to purchase only one SSL certificate that will work on all sites (main domain and subdomains) at once without the need to monitor the status and validity of each individual site.

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