diff --git a/ipv6/sz.cidr b/ipv6/sz.cidr
index 66c357641..518f18a7c 100644
--- a/ipv6/sz.cidr
+++ b/ipv6/sz.cidr
@@ -3,5 +3,6 @@
 2c0f:940::/32
 2c0f:1580::/32
 2c0f:2780::/32
+2c0f:4620::/32
 2c0f:e908::/32
 2c0f:ebc8::/32
diff --git a/ipv6/zz.cidr b/ipv6/zz.cidr
index 9ff312962..34b6f2347 100644
--- a/ipv6/zz.cidr
+++ b/ipv6/zz.cidr
@@ -3654,7 +3654,11 @@
 2c0f:4604::/30
 2c0f:4608::/29
 2c0f:4610::/28
-2c0f:4620::/27
+2c0f:4621::/32
+2c0f:4622::/31
+2c0f:4624::/30
+2c0f:4628::/29
+2c0f:4630::/28
 2c0f:4641::/32
 2c0f:4642::/31
 2c0f:4644::/30