diff --git a/gso/api/v1/network.py b/gso/api/v1/network.py
index 9b385c8e86330e5929a8e7b1a882faf07b966da0..b92a135e63ff1a4fcee89e987b3c568fccc28d7f 100644
--- a/gso/api/v1/network.py
+++ b/gso/api/v1/network.py
@@ -42,6 +42,7 @@ class RouterBlock(OrchestratorBaseModel):
     router_role: RouterRole
     vendor: Vendor
     router_site: SiteBlock
+    owner_subscription_id: UUID
 
 
 class IptrunkSideBlock(OrchestratorBaseModel):
@@ -121,6 +122,7 @@ def network_topology() -> NetworkTopologyDomainModelSchema:
                             "router_role": side["iptrunk_side_node"]["router_role"],
                             "vendor": side["iptrunk_side_node"]["vendor"],
                             "router_site": side["iptrunk_side_node"]["router_site"],
+                            "owner_subscription_id": side["iptrunk_side_node"]["owner_subscription_id"],
                         },
                     }
                     for side in extended_model["iptrunk"]["iptrunk_sides"]