diff --git a/ipv6/br.cidr b/ipv6/br.cidr
index 0fee8ae94..9664c5893 100644
--- a/ipv6/br.cidr
+++ b/ipv6/br.cidr
@@ -4936,7 +4936,6 @@
 2804:51b4::/32
 2804:51bc::/32
 2804:51c0::/32
-2804:51c4::/32
 2804:51c8::/32
 2804:51cc::/32
 2804:51d0::/32
@@ -6326,7 +6325,6 @@
 2804:6a0c::/32
 2804:6a10::/32
 2804:6a14::/32
-2804:6a18::/32
 2804:6a1c::/32
 2804:6a20::/32
 2804:6a24::/32
diff --git a/ipv6/ec.cidr b/ipv6/ec.cidr
index abab75534..cefbfe51c 100644
--- a/ipv6/ec.cidr
+++ b/ipv6/ec.cidr
@@ -52,6 +52,7 @@
 2803:7e0::/32
 2803:810::/32
 2803:ba0::/32
+2803:dd0::/32
 2803:e10::/32
 2803:fc0::/32
 2803:1050::/32