diff --git a/gentong.js b/gentong.js
index 87420d5..ed392bf 100644
--- a/gentong.js
+++ b/gentong.js
@@ -316,6 +316,9 @@ function responseCodeFromMessage(message) {
     else if (message.toLowerCase().indexOf('nomor telepon seluler salah') >= 0) {
         return '14';
     }
+    else if (message.indexOf('UNKNOWN_NUMBER') >= 0) {
+        return '14';
+    }
     else if (message.toLowerCase().indexOf('bulk or forbidden request') >= 0) {
         return '55';
     }