Some domains are up there because they're being used by applications, for exemple no one goes directly to microsoft.com but Windows does it for many things like update, monitoring, telemetry ect ...
*.mozilla.org is probably resolved when you use Firefox.
Cloudflare can't know if the resolve was made by a user or by internal application logic.
*.mozilla.org is probably resolved when you use Firefox.
Cloudflare can't know if the resolve was made by a user or by internal application logic.