If you are not familiar with the oc command, refer to OpenShift - Getting Started with the oc command.

An OpenShift route or an Ingress route will provide a URL such as http://route001-project001.apps.openshift.example.com:8080 which is used to route a request onto a service, which is then routed onto a pod, and then to the container in the pod, and finally to the application running in the container.

Like this.

Egress provides a way for an application deployed on OpenShift to access an external URL, such as http://www.example.com.

The Ingress Controllers and Ingress Routers are responsible for allowing external requests access to routes/services/pods/apps.

The oc get ingresscontroller command can be used to list the Ingress Controllers which are in the openshift-ingress-operator namespace.

~]$ oc get ingresscontroller --namespace openshift-ingress-operator
NAME              AGE
default           360d
external-router   356d
internal-router   356d

The oc get services command can be used to list the Ingress Routers which are in the openshift-ingress namespace.

~]$ oc get services --namespace openshift-ingress
NAME                              TYPE        CLUSTER-IP       EXTERNAL-IP   PORT(S)                      AGE
router-internal-default           ClusterIP   10.11.12.13      <none>        80/TCP,443/TCP,1936/TCP      423d
router-internal-external-router   ClusterIP   10.11.12.13      <none>        80/TCP,443/TCP,1936/TCP      419d
router-internal-internal-router   ClusterIP   10.11.12.21      <none>        80/TCP,443/TCP,1936/TCP      419d
router-nodeport-external-router   NodePort    10.11.12.24      <none>        80:32080/TCP,443:32443/TCP   419d
router-nodeport-internal-router   NodePort    10.11.12.26      <none>        80:31080/TCP,443:31443/TCP   419d

The oc describe service command can be used to display more information about an Ingress Router.

~]$ oc describe service router-internal-default --namespace openshift-ingress
Name:              router-internal-default
Namespace:         openshift-ingress
Labels:            ingresscontroller.operator.openshift.io/owning-ingresscontroller=default
Annotations:       service.alpha.openshift.io/serving-cert-secret-name: router-metrics-certs-default
                   service.alpha.openshift.io/serving-cert-signed-by: openshift-service-serving-signer@1626455578
                   service.beta.openshift.io/serving-cert-signed-by: openshift-service-serving-signer@1626455578
Selector:          ingresscontroller.operator.openshift.io/deployment-ingresscontroller=default
Type:              ClusterIP
IP Family Policy:  SingleStack
IP Families:       IPv4
IP:                172.16.17.18
IPs:               172.16.17.18
Port:              http  80/TCP
TargetPort:        http/TCP
Endpoints:         10.11.12.13:80,10.11.12.14:80,10.11.12.15:80
Port:              https  443/TCP
TargetPort:        https/TCP
Endpoints:         10.11.12.13:443,10.11.12.14:443,10.11.12.15:443
Port:              metrics  1936/TCP
TargetPort:        1936/TCP
Endpoints:         10.11.12.13:1936,10.11.12.14:1936,10.11.12.15:1936
Session Affinity:  None
Events:            <none>