diff --git a/portnums.proto b/portnums.proto
index 2151a22..81b0a39 100644
--- a/portnums.proto
+++ b/portnums.proto
@@ -94,6 +94,13 @@ enum PortNum {
      */
     STORE_FORWARD_APP = 65;
 
+    /*
+     * STORE_FORWARD_APP (Work in Progress)
+     *
+     * Maintained by Jm Casler (MC Hamster) : jm@casler.org
+     */
+    RANGE_TEST_APP = 66;
+
     /*
      * Private applications should use portnums >= 256.
      * To simplify initial development and testing you can use "PRIVATE_APP"