diff --git a/data/dns/dan.dn42 b/data/dns/dan.dn42
deleted file mode 100644
index 4942b58d2..000000000
--- a/data/dns/dan.dn42
+++ /dev/null
@@ -1,7 +0,0 @@
-domain:             dan.dn42
-descr:              DAN DNS
-admin-c:            DAN-DN42
-tech-c:             DAN-DN42
-mnt-by:             DAN-MNT
-nserver:            ns1.dan.dn42
-source:             DN42
diff --git a/data/dns/hack b/data/dns/hack
index 79b2b251a..9e0eac1e1 100644
--- a/data/dns/hack
+++ b/data/dns/hack
@@ -1,6 +1,6 @@
 domain:             hack
 remarks:            TLD of chaosvpn.
-nserver:            ns1.chaosvpn.g.nic.dn42 172.31.0.5
-nserver:            ns2.chaosvpn.g.nic.dn42 172.31.255.53
+nserver:            ns1.chaosvpn.g.nic.dn42
+nserver:            ns2.chaosvpn.g.nic.dn42
 mnt-by:             DN42-MNT
 source:             DN42
diff --git a/data/dns/rzl b/data/dns/rzl
index 4ba7987b7..01ec97af4 100644
--- a/data/dns/rzl
+++ b/data/dns/rzl
@@ -1,6 +1,6 @@
 domain:             rzl
 org:                ORG-RZL
-nserver:            ns1.rzl.g.nic.dn42 172.22.36.250
+nserver:            ns1.rzl.g.nic.dn42
 mnt-by:             LUTOMA-MNT
 mnt-by:             DOCSTEEL-MNT
 mnt-by:             HAX404-MNT