diff --git a/ipv6/ar.cidr b/ipv6/ar.cidr
index f9cc31353..213b6d61f 100644
--- a/ipv6/ar.cidr
+++ b/ipv6/ar.cidr
@@ -916,6 +916,7 @@
 2803:c640::/32
 2803:c6a0::/32
 2803:c6c0::/32
+2803:c6d0::/32
 2803:c740::/32
 2803:c760::/32
 2803:c780::/32