diff --git a/ns-blacklist.txt b/ns-blacklist.txt
index b57e256a60..8c53b12cf4 100644
--- a/ns-blacklist.txt
+++ b/ns-blacklist.txt
@@ -35,3 +35,4 @@ status: NXDOMAIN
 .ztomy.com.
 .parklogic.com.
 .gandi.net.
+.worldnic.com.