diff --git a/ipv6/cn.cidr b/ipv6/cn.cidr
index 01835a06d..004e71e3a 100644
--- a/ipv6/cn.cidr
+++ b/ipv6/cn.cidr
@@ -1488,6 +1488,7 @@
 2406:1380::/32
 2406:1480::/32
 2406:1580::/32
+2406:15c0::/32
 2406:1680::/32
 2406:1780::/32
 2406:1880::/32