diff --git a/ipv4/ar.cidr b/ipv4/ar.cidr
index 459de1504..23e2241c8 100644
--- a/ipv4/ar.cidr
+++ b/ipv4/ar.cidr
@@ -166,7 +166,6 @@
 45.179.60.0/24
 45.179.72.0/22
 45.179.92.0/22
-45.179.254.0/23
 45.180.60.0/22
 45.180.76.0/22
 45.180.176.0/23
diff --git a/ipv4/br.cidr b/ipv4/br.cidr
index bcc6ba201..e438fcf00 100644
--- a/ipv4/br.cidr
+++ b/ipv4/br.cidr
@@ -631,8 +631,7 @@
 45.179.208.0/20
 45.179.224.0/20
 45.179.240.0/22
-45.179.248.0/22
-45.179.252.0/23
+45.179.248.0/21
 45.180.0.0/21
 45.180.12.0/22
 45.180.16.0/22
diff --git a/ipv6/ar.cidr b/ipv6/ar.cidr
index 8d8c70d21..0044d32a3 100644
--- a/ipv6/ar.cidr
+++ b/ipv6/ar.cidr
@@ -418,7 +418,6 @@
 2803:4100::/32
 2803:4110::/32
 2803:4140::/32
-2803:4160::/32
 2803:4190::/32
 2803:41e0::/32
 2803:4260::/32
diff --git a/ipv6/br.cidr b/ipv6/br.cidr
index 1a9a1c606..63916b21b 100644
--- a/ipv6/br.cidr
+++ b/ipv6/br.cidr
@@ -1799,7 +1799,6 @@
 2804:17bc::/32
 2804:17c0::/32
 2804:17c4::/32
-2804:17c8::/32
 2804:17cc::/32
 2804:17d0::/32
 2804:17d4::/32
@@ -3811,7 +3810,6 @@
 2804:3db8::/32
 2804:3dbc::/32
 2804:3dc0::/32
-2804:3dc4::/32
 2804:3dc8::/32
 2804:3dcc::/32
 2804:3dd4::/32
diff --git a/ipv6/mx.cidr b/ipv6/mx.cidr
index 0444b5b83..829d59906 100644
--- a/ipv6/mx.cidr
+++ b/ipv6/mx.cidr
@@ -188,6 +188,6 @@
 2806:442::/32
 2806:444::/30
 2806:448::/29
-2806:450::/31
-2806:452::/32
+2806:450::/30
+2806:454::/32
 2806:1000::/24