diff --git a/ipv6/mx.cidr b/ipv6/mx.cidr
index 407a46675..67a66d1b9 100644
--- a/ipv6/mx.cidr
+++ b/ipv6/mx.cidr
@@ -182,4 +182,5 @@
 2806:442::/32
 2806:444::/30
 2806:448::/30
+2806:44c::/32
 2806:1000::/24