diff --git a/data/dns/sun.dn42 b/data/dns/sun.dn42
index 236f50918..b6250298a 100644
--- a/data/dns/sun.dn42
+++ b/data/dns/sun.dn42
@@ -2,6 +2,8 @@ domain:             sun.dn42
 admin-c:            SUNNET-DN42
 tech-c:             SUNNET-DN42
 mnt-by:             SUNNET-MNT
-nserver:            ns1.sun.dn42 172.21.100.222
-nserver:            ns1.sun.dn42 fdc8:dc88:ee11:100::222
+nserver:            ns1.sun.dn42 172.21.100.251
+nserver:            ns1.sun.dn42 fdc8:dc88:ee11:251::1
+nserver:            ns2.sun.dn42 172.21.100.252
+nserver:            ns2.sun.dn42 fdc8:dc88:ee11:252::1
 source:             DN42
diff --git a/data/inet6num/fdc8:dc88:ee11::_48 b/data/inet6num/fdc8:dc88:ee11::_48
index eaa6bde1e..f2a2c9018 100644
--- a/data/inet6num/fdc8:dc88:ee11::_48
+++ b/data/inet6num/fdc8:dc88:ee11::_48
@@ -7,5 +7,6 @@ admin-c:            SUNNET-DN42
 tech-c:             SUNNET-DN42
 mnt-by:             SUNNET-MNT
 nserver:            ns1.sun.dn42
+nserver:            ns2.sun.dn42
 status:             ASSIGNED
 source:             DN42
diff --git a/data/inetnum/172.21.100.128_25 b/data/inetnum/172.21.100.128_25
index 9906738e2..220f2f3c2 100644
--- a/data/inetnum/172.21.100.128_25
+++ b/data/inetnum/172.21.100.128_25
@@ -7,5 +7,6 @@ admin-c:            SUNNET-DN42
 tech-c:             SUNNET-DN42
 mnt-by:             SUNNET-MNT
 nserver:            ns1.sun.dn42
+nserver:            ns2.sun.dn42
 status:             ASSIGNED
 source:             DN42
diff --git a/data/inetnum/172.21.100.16_29 b/data/inetnum/172.21.100.16_29
index 53b356095..f08c8ed41 100644
--- a/data/inetnum/172.21.100.16_29
+++ b/data/inetnum/172.21.100.16_29
@@ -7,5 +7,6 @@ admin-c:            SUNNET-DN42
 tech-c:             SUNNET-DN42
 mnt-by:             SUNNET-MNT
 nserver:            ns1.sun.dn42
+nserver:            ns2.sun.dn42
 status:             ASSIGNED
 source:             DN42