It does that because it's required to. The system is called Certificate Transparency[1] and browsers require certificates to be in CT logs to be accepted. If y

It does that because it's required to. The system is called Certificate Transparency[1] and browsers require certificates to be in CT logs to be accepted. If you want to hide what subdomains you have you can use a wildcard certificate, though it can be a bit harder to set up. [1]: https://developer.mozilla.org/en-US/docs/Web/Security/Certificate_Transparency https://developer.mozilla.org/en-US/docs/Web/Security/Certif...