diff --git a/check.py b/check.py
index 63db369..52303a2 100755
--- a/check.py
+++ b/check.py
@@ -37,6 +37,9 @@ not_here_list = [
     "Test Page for the Apache HTTP Server",
     "Site not found · GitHub Pages",
     "504: Gateway time-out",
+    "This page doesn't exist (404)",
+    "Coming soon",
+    "NOT_FOUND",
 ]
 
 conferences = [