diff --git a/data/dns/f.dn42 b/data/dns/f.dn42
new file mode 100644
index 000000000..286aa5838
--- /dev/null
+++ b/data/dns/f.dn42
@@ -0,0 +1,7 @@
+domain:             f.dn42
+admin-c:            FRUWORG-DN42
+tech-c:             FRUWORG-DN42
+mnt-by:             FRUWORG-MNT
+nserver:            ns.f.dn42 172.22.134.1
+nserver:            ns.f.dn42 fd9a:d7:8b23::1
+source:             DN42
diff --git a/data/inet6num/fd9a:d7:8b23::_48 b/data/inet6num/fd9a:d7:8b23::_48
index 649bd3eed..46e102240 100644
--- a/data/inet6num/fd9a:d7:8b23::_48
+++ b/data/inet6num/fd9a:d7:8b23::_48
@@ -7,5 +7,6 @@ country:            DE
 admin-c:            FRUWORG-DN42
 tech-c:             FRUWORG-DN42
 mnt-by:             FRUWORG-MNT
+nserver:            ns.f.dn42
 status:             ASSIGNED
 source:             DN42
diff --git a/data/inetnum/172.22.134.0_28 b/data/inetnum/172.22.134.0_28
index 618d0d225..0a0d8c3c4 100644
--- a/data/inetnum/172.22.134.0_28
+++ b/data/inetnum/172.22.134.0_28
@@ -7,5 +7,6 @@ country:            DE
 admin-c:            FRUWORG-DN42
 tech-c:             FRUWORG-DN42
 mnt-by:             FRUWORG-MNT
+nserver:            ns.f.dn42
 status:             ASSIGNED
 source:             DN42