diff --git a/disposable_email_blacklist.conf b/disposable_email_blacklist.conf
index e02d685..6dcbb27 100644
--- a/disposable_email_blacklist.conf
+++ b/disposable_email_blacklist.conf
@@ -578,6 +578,7 @@ mail21.cc
 mail2rss.org
 mail2world.com
 mail333.com
+mail666.ru
 mail4trash.com
 mailbidon.com
 mailbiz.biz