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 *.example.org
and *.subdomain.example.org
inside the same certificate.
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