diff --git a/data/hbo b/data/hbo
index b1f29d17..f7739b5d 100644
--- a/data/hbo
+++ b/data/hbo
@@ -1,3 +1,6 @@
+# All .hbo domains
+hbo
+
 beforeigners.com
 brightline.tv
 cinemax.com