diff --git a/data/cloudflare b/data/cloudflare
index 63ae0c63..1f2d699c 100644
--- a/data/cloudflare
+++ b/data/cloudflare
@@ -10,6 +10,7 @@ cloudflarebolt.com
 cloudflareclient.com
 cloudflareinsights.com
 cloudflareok.com
+cloudflarepreview.com
 cloudflareresolve.com
 cloudflaressl.com
 cloudflarestatus.com