diff --git a/ipv6/ug.cidr b/ipv6/ug.cidr
index d0c23f043..753cf81b0 100644
--- a/ipv6/ug.cidr
+++ b/ipv6/ug.cidr
@@ -6,6 +6,7 @@
 2001:43f8:1370::/48
 2001:43ff::/48
 2c0f:3d00::/32
+2c0f:4b00::/32
 2c0f:e910::/32
 2c0f:e950::/32
 2c0f:ebe0::/32
diff --git a/ipv6/zz.cidr b/ipv6/zz.cidr
index f2d431c16..ed9d7e870 100644
--- a/ipv6/zz.cidr
+++ b/ipv6/zz.cidr
@@ -1788,7 +1788,14 @@
 2c0f:4a20::/27
 2c0f:4a40::/26
 2c0f:4a80::/25
-2c0f:4b00::/24
+2c0f:4b01::/32
+2c0f:4b02::/31
+2c0f:4b04::/30
+2c0f:4b08::/29
+2c0f:4b10::/28
+2c0f:4b20::/27
+2c0f:4b40::/26
+2c0f:4b80::/25
 2c0f:4c01::/32
 2c0f:4c02::/31
 2c0f:4c04::/30