diff --git a/ansible/host_vars/linux-01.ih-eu-mda1.nimbus.mainnet.yml b/ansible/host_vars/linux-01.ih-eu-mda1.nimbus.mainnet.yml
index 16b1e04..d78ea07 100644
--- a/ansible/host_vars/linux-01.ih-eu-mda1.nimbus.mainnet.yml
+++ b/ansible/host_vars/linux-01.ih-eu-mda1.nimbus.mainnet.yml
@@ -2,7 +2,16 @@
 # Communityu test REST API endpoint.
 beacon_node_rest_address: '0.0.0.0'
 
-# WARNING: This will change if number of nodes changes.
+# Extract dynamically port form layout.
+test_api_beacon_node_branch: 'unstable'
+test_api_beacon_node_rest_index: |-
+  {{ nodes_layout[hostname]
+  | ansible.utils.index_of(test='eq', key='branch', value=test_api_beacon_node_branch)
+  | first }}
+test_api_beacon_node_rest_port: |-
+  {{ beacon_node_rest_port_base + test_api_beacon_node_rest_index|int }}
+
 redirect_ports:
-  # beacon-node-mainnet-unstable-01
-  - { src: 80, dst: 9302, comment: 'Test Beacon API unstable-01 (80->9302/tcp)' }
+  - src: 80
+    dst: '{{ test_api_beacon_node_rest_port }}'
+    comment: 'Public Beacon API ({{ test_api_beacon_node_branch }})'
diff --git a/ansible/host_vars/linux-02.ih-eu-mda1.nimbus.mainnet.yml b/ansible/host_vars/linux-02.ih-eu-mda1.nimbus.mainnet.yml
index 44c103f..7d21ff4 100644
--- a/ansible/host_vars/linux-02.ih-eu-mda1.nimbus.mainnet.yml
+++ b/ansible/host_vars/linux-02.ih-eu-mda1.nimbus.mainnet.yml
@@ -2,7 +2,16 @@
 # Communityu test REST API endpoint.
 beacon_node_rest_address: '0.0.0.0'
 
+# Extract dynamically port form layout.
+test_api_beacon_node_branch: 'testing'
+test_api_beacon_node_rest_index: |-
+  {{ nodes_layout[hostname]
+  | ansible.utils.index_of(test='eq', key='branch', value=test_api_beacon_node_branch) }}
+test_api_beacon_node_rest_port: |-
+  {{ beacon_node_rest_port_base + test_api_beacon_node_rest_index|int }}
+
 # WARNING: This will change if number of nodes changes.
 redirect_ports:
-  # beacon-node-mainnet-testing-01
-  - { src: 80, dst: 9301, comment: 'Test Beacon API testing-01 (80->9301/tcp)' }
+  - src: 80
+    dst: '{{ test_api_beacon_node_rest_port }}'
+    comment: 'Public Beacon API ({{ test_api_beacon_node_branch }})'