The openshift/origin-haproxy-router is an HAProxy router that is used as an external to internal interface to OpenShift services. When you create a route you specify the hostname and service that the route is connecting.
[vagrant@local ~]$ oc get routes
NAME HOST/PORT PATH SERVICE LABELS INSECURE POLICY TLS TERMINATION
kibana kibana.local.feedhenry.io logging-kibana component=support,logging-infra=support,provider=openshift passthrough
kibana-ops kibana-ops.example.com logging-kibana-ops component=support,logging-infra=support,provider=openshift passthrough