diff --git a/ipv6/ar.cidr b/ipv6/ar.cidr
index 3477fee5..34131879 100644
--- a/ipv6/ar.cidr
+++ b/ipv6/ar.cidr
@@ -467,7 +467,6 @@
 2803:5090::/32
 2803:50a0::/32
 2803:51e0::/32
-2803:5210::/32
 2803:5220::/32
 2803:5240::/32
 2803:5260::/32
diff --git a/ipv6/co.cidr b/ipv6/co.cidr
index 2fbaeca4..ef4a39c0 100644
--- a/ipv6/co.cidr
+++ b/ipv6/co.cidr
@@ -216,7 +216,6 @@
 2801:1d:c800::/48
 2801:1d:d800::/48
 2801:1d:e000::/48
-2801:1d:e800::/48
 2801:1e:800::/48
 2801:1e:3000::/48
 2801:1e:3800::/48
diff --git a/ipv6/ec.cidr b/ipv6/ec.cidr
index f7cb9a37..767eb6a6 100644
--- a/ipv6/ec.cidr
+++ b/ipv6/ec.cidr
@@ -119,7 +119,6 @@
 2803:5fe0::/32
 2803:62c0::/32
 2803:6320::/32
-2803:6390::/32
 2803:6420::/32
 2803:6490::/32
 2803:6520::/32
@@ -160,7 +159,6 @@
 2803:9ac0::/32
 2803:9c20::/32
 2803:9cc0::/32
-2803:9d90::/32
 2803:9dc0::/32
 2803:9e50::/32
 2803:a010::/32