diff --git a/not_cloudflare/list_customerror.txt b/not_cloudflare/list_customerror.txt
index 786f2ac..e39b15b 100644
--- a/not_cloudflare/list_customerror.txt
+++ b/not_cloudflare/list_customerror.txt
@@ -149,6 +149,7 @@ manta.com
 meaningness.com
 midtnmusic.com
 mixcloud.com
+mondialfax.com
 monkeyandmekitchenadventures.com
 moodle.org
 mosquitomagnet.com