diff --git a/data/dns/castle.dn42 b/data/dns/castle.dn42
index f7a0b6228..c4075175c 100644
--- a/data/dns/castle.dn42
+++ b/data/dns/castle.dn42
@@ -1,6 +1,6 @@
 domain:            castle.dn42
-nserver:           ns1.redeye.dn42 172.20.58.40
-nserver:           ns2.redeye.dn42 172.20.58.50
+nserver:           ns1.redeye.dn42
+nserver:           ns2.redeye.dn42
 status:            CONNECT
 admin-c:           ANAND-DN42
 tech-c:            ANAND-DN42