diff --git a/ipv6/za.cidr b/ipv6/za.cidr
index e181bf6b8..03994627c 100644
--- a/ipv6/za.cidr
+++ b/ipv6/za.cidr
@@ -38,7 +38,6 @@
 2001:43f8:920::/48
 2001:43f8:950::/48
 2001:43f8:960::/48
-2001:43f8:ac0::/48
 2001:43f8:bc0::/48
 2001:43f8:bf0::/48
 2001:43f8:c70::/48
diff --git a/ipv6/zz.cidr b/ipv6/zz.cidr
index ba137deda..89995b8b2 100644
--- a/ipv6/zz.cidr
+++ b/ipv6/zz.cidr
@@ -575,10 +575,7 @@
 2001:43f8:ab2::/47
 2001:43f8:ab4::/46
 2001:43f8:ab8::/45
-2001:43f8:ac1::/48
-2001:43f8:ac2::/47
-2001:43f8:ac4::/46
-2001:43f8:ac8::/45
+2001:43f8:ac0::/44
 2001:43f8:ad1::/48
 2001:43f8:ad2::/47
 2001:43f8:ad4::/46