diff --git a/ipv4/mx.cidr b/ipv4/mx.cidr
index 8c57426a..b4f46123 100644
--- a/ipv4/mx.cidr
+++ b/ipv4/mx.cidr
@@ -123,6 +123,7 @@
 138.122.96.0/22
 138.122.144.0/22
 138.122.184.0/22
+138.122.224.0/22
 138.122.252.0/22
 138.185.0.0/22
 138.185.224.0/22