diff --git a/ipv6/us.cidr b/ipv6/us.cidr
index a76410633..c2eed8cf5 100644
--- a/ipv6/us.cidr
+++ b/ipv6/us.cidr
@@ -1046,6 +1046,8 @@
 2602:81c:d000::/40
 2602:81c:e000::/44
 2602:81c:f000::/44
+2602:f43d::/40
+2602:f43e::/40
 2602:f43f::/36
 2602:f440::/40
 2602:f441::/40