diff --git a/data/aut-num/AS4242422990 b/data/aut-num/AS4242422990
index 8f680fef9..6b0331687 100644
--- a/data/aut-num/AS4242422990
+++ b/data/aut-num/AS4242422990
@@ -3,3 +3,4 @@ as-name:            AS for TAN
 admin-c:            TAN-DN42
 tech-c:             TAN-DN42
 mnt-by:             TAN-MNT
+source:             DN42