diff --git a/blacklisted_numbers.txt b/blacklisted_numbers.txt
index 2fc98555b3..486a9a0f76 100644
--- a/blacklisted_numbers.txt
+++ b/blacklisted_numbers.txt
@@ -2586,3 +2586,4 @@
 +447700168833
 07992-335-468
 824-910-6438
+18333923573