Limit on domain aliases


Hi, I have used your certificates for a few websites. Can you tell me how many domain aliases a single certificate can cover? I have a website system that has multiple domain aliases mapped to a single domain because the websites all share the same set of files, but each domain has its own database (and therefore each website is different).

I tried to apply a Let’s Encrypt SSL certificate to it but it didn’t work, I presume because I had too many domain aliases.


You can have up to 100 names per certificate.

If you need more, you can split them across multiple certificates.


Does the domain with and without “www” count as 2 or 1?


@redrocky It counts for 2.


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