diff --git a/dns-rest-api1.sunet.se/overlay/etc/knot/conf.d/dco.sunet.se.conf b/dns-rest-api1.sunet.se/overlay/etc/knot/conf.d/dco.sunet.se.conf
new file mode 100644
index 0000000..08befff
--- /dev/null
+++ b/dns-rest-api1.sunet.se/overlay/etc/knot/conf.d/dco.sunet.se.conf
@@ -0,0 +1,6 @@
+# DCO.sunet.se (bj)
+
+zone:
+  - domain: dco.sunet.se
+    dnssec-signing: off
+    notify: [ ns1-sunet-se, sunic-node1, sunic-node2, sunic-node3 ]