Hi! I have security demands, my server has access only some IPs. Can I get list IPs what I should have for work
create/update my cert?
For example from bitbucket:
https://confluence.atlassian.com/bitbucket/what-are-the-bitbucket-cloud-ip-addresses-i-should-use-to-configure-my-corporate-firewall-343343385.html
No. Let's Encrypt does not and will not publish the IPs they use for validation, and has expressed an intent to broaden the pool in the future (possibly including technologies like TOR). If you're unable or unwilling to open port 80 to the whole Internet, you can look into DNS validation, which doesn't require any inbound connections to your network at all.