diff --git a/ipv6/us.cidr b/ipv6/us.cidr
index 5c2cd6724..35f557696 100644
--- a/ipv6/us.cidr
+++ b/ipv6/us.cidr
@@ -3692,6 +3692,7 @@
 2604:3500::/32
 2604:3540::/28
 2604:3580::/32
+2604:35c0::/32
 2604:3600::/32
 2604:3640::/32
 2604:3680::/32