Why does a device need access to *.docker.com, *.docker.io

We are trying to simplify the firewall requirements that we impose on customers running a Balena device.
Why are docker.com and docker.io listed as domains that need whitelisting?
What happens if they are not accessible?

Hello, we previously required access to docker domains for pulling base images, but that should no longer be the case (unless you are developing in local mode.) The current network requirements are listed here: Network Setup on balenaOS 2.x - Balena Documentation - I didn’t notice the docker domains listed, do you see them in other documentation?

Ah thanks. I did not notice that you updated your documentation. Great.