Routing decide controller by host

I tried to select a controller by host. This is what I did in my routing.yml:

rout_default:
    resource: "@DefaultBundle/Controller/"
    type:     annotation
    prefix:   /

rout1:
    resource: "@DefaultBundle/Controller/Controller1Controller.php"
    type:     annotation
    prefix:   /
    host: example.com

rout2:
    resource: "@DefaultBundle/Controller/Controller2Controller.php"
    type:     annotation
    prefix:   /
    host: example2.com

In the contollers I have following Actions:

/**
 * @Route("/data", name="data")
 */
public function dataAction()
{
    //...
}

I have these functions in both controllers. I know that the action and the name is the same, but I hoped, that the system will notice the difference by the host.

If I type debug:router in the console, there is only the route of rout2. The other one is not visible.

Thank you for your help.