diff --git a/html/planeObject.js b/html/planeObject.js
index 46aac5d..e142942 100644
--- a/html/planeObject.js
+++ b/html/planeObject.js
@@ -166,6 +166,9 @@ PlaneObject.prototype.isFiltered = function() {
     if (this.selected && !SelectedAllPlanes)
         return false;
 
+    if (noRegOnly && (this.registration || this.icao.startsWith('~')))
+        return true;
+
     if (onlySelected && !this.selected) {
         return true;
     }
diff --git a/html/script.js b/html/script.js
index a4e8e98..8eed2bd 100644
--- a/html/script.js
+++ b/html/script.js
@@ -93,6 +93,7 @@ let inactive = 0;
 let firstFetchDone = false;
 let overrideMapType = null;
 let halloween = false;
+let noRegOnly = false;
 
 let shareLink = '';
 
@@ -510,6 +511,8 @@ function initialize() {
             MapDim = true;
         }
 
+        if (search.has('noRegOnly'))
+            noRegOnly = true;
 
         if (search.has('mapContrast')) {
             let contrast = parseFloat(search.get('mapContrast'));