diff --git a/Apps/SplitHorizonApp/dnsApp.config b/Apps/SplitHorizonApp/dnsApp.config
index 7a2450c3..e9fb633a 100644
--- a/Apps/SplitHorizonApp/dnsApp.config
+++ b/Apps/SplitHorizonApp/dnsApp.config
@@ -1 +1,9 @@
-#This app requires no config.
\ No newline at end of file
+{
+    "networks": {
+        "custom-networks": [
+            "172.16.1.0/24",
+            "172.16.10.0/24",
+            "172.16.2.1"
+        ]
+    }
+}