Let's Encrypt Service Ip Block

Hi,

On the firewall we use, we need to add the IP addresses of the let's encrypt service to the whitelist.
Can you post the ip blocks you used?

Hi @fatihyldrm, and welcome to the LE community forum :slight_smile:

I'm surprised you didn't find that question already answered.
See:
FAQ - Let's Encrypt
What IP addresses does Let’s Encrypt use to validate my web server?

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Preferred wording is allowedlist.

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That's what Let's Encrypt has chosen to call it, but other people use the traditional terms whitelist and blacklist, which are still widespread and normal usage.

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Very true.

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Why perpetuate their use?
"widespread", perhaps...
"normal", is it?

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