SSL Multilevel Subdomain Wildcard

No, it is not possible. A wildcard inside a name only reflects a single label and the wildcard can only be leftmost. Thus *.*.example.org or www.*.example.org are not possible. And *.example.org will neither match example.org nor www.subdomain.example.org, only subdomain.example.org. But you can have multiple wildcard names inside the same certificate, that is you can have … Read more