diff --git a/ipv6/mx.cidr b/ipv6/mx.cidr
index 79b7f836a..a15ac51a9 100644
--- a/ipv6/mx.cidr
+++ b/ipv6/mx.cidr
@@ -79,6 +79,7 @@
 2801:c4:297::/48
 2801:c4:298::/47
 2801:c4:2a1::/48
+2801:c4:2a2::/48
 2801:c4:2a4::/48
 2801:c4:300::/40
 2801:c4:400::/39