Wildcard third level


#1

Hi,

Will Let’s Encrypt issue third level wildcard certs? For example *.two.example.com?


#2

Hi @ivankisic,

Yes. Let’s Encrypt will issue a certificate with a name like this.


#3

An “asterisk” as I have been explained:
An asterisk does equal ANY (but not ALL)
That is, it will match all letters, numbers and even dashes and underscores.
But it will not match a period, so it can’t crossover onto lower subdomains.

So…
*.domain.com
won’t cover:
*.1.domain.dom
*.2.domain.com
*.3.domain.com

But YES you can get certs for those wildcards:
*.1.domain.dom
*.2.domain.com
*.3.domain.com
And you can even put them all on one cert.
But as before…
*.1.domain.dom
Won’t cover:
*.a.1.domain.dom
*.b.1.domain.dom
*.c.1.domain.dom

(rinse and repeat - up to 100 names on a single cert)


#4

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