diff --git a/lib/domains/stoplist.txt b/lib/domains/stoplist.txt
index 2f4bc99535..7afb1c39d7 100644
--- a/lib/domains/stoplist.txt
+++ b/lib/domains/stoplist.txt
@@ -1,3 +1,4 @@
+id.ac
 2011.cqut.edu.cn
 2012.cqut.edu.cn
 2013.cqut.edu.cn