Does the rate limit gets increased when expand an existing certificate

Hi Folks,

for example my base domain is

I already have an certificate for, and

Now if I want to add to my existing certificate within --expand.
Does this increase the limit of and/or


Not that I am aware of as you are simply expanding your certificate

The expanded certificate covers,, and Therefore (as I understand it) it will be counted as:

  • 1 certificate against the rate limit for
  • 1 certificate against the rate limit for

The fact that you used --expand is irrelevant; that option is internal to Certbot and the CA does not know or care about it - it will simply give you a new certificate.


@jmorahan is absolutely spot on

You are issuing a new certificate therefore Rate Limits Apply

If you are interested in further reading in the area and proof of this behavior review:


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