diff --git a/undelegated.txt b/undelegated.txt
index 7f84b1b..1d8f94d 100644
--- a/undelegated.txt
+++ b/undelegated.txt
@@ -111,6 +111,7 @@ domain
 envoy
 example
 f.f.ip6.arpa
+fritz.box
 grp
 gw==
 home