If you use a publicly trusted TLS certificate (either directly, or via Nabu Casa offering), domain will be recorded in Certificate Transparency logs.
You can slightly hide it if you use a wildcard domain in the TLS certificate (e.g. *.example.com), and then use a subdomain for the service. Ideally, something that’s not home/hass/ha.example.com, or otherwise easily guessable.
If you use a publicly trusted TLS certificate (either directly, or via Nabu Casa offering), domain will be recorded in Certificate Transparency logs.
You can slightly hide it if you use a wildcard domain in the TLS certificate (e.g.
*.example.com), and then use a subdomain for the service. Ideally, something that’s nothome/hass/ha.example.com, or otherwise easily guessable.