diff --git a/volumes/bind9/bind9/config/root.zone b/volumes/bind9/bind9/config/root.zone
index cc0d570..145b0ab 100644
--- a/volumes/bind9/bind9/config/root.zone
+++ b/volumes/bind9/bind9/config/root.zone
@@ -8,9 +8,10 @@
 .			    518400	IN	NS	a.root-servers.local.
 a.root-servers.local.	518400	IN	A	10.5.0.5
 lan.			172800	IN	NS	a0.dns.nic.lan.
-a0.dns.nic.lan.  	518400	IN	A	10.5.0.6
+a0.dns.nic.lan.		518400	IN	A	10.5.0.6
 
+# See: https://en.wikipedia.org/wiki/.arpa
+arpa.			172800	IN	NS	a.root-servers.local.
 
-;arpa.			172800	IN	NS	a.root-servers.local.
-;local.			172800	IN	NS	a0.dns.nic.local.
-;a0.dns.nic.local.	518400	IN	A	192.168.2.19
+local.			172800	IN	NS	a0.dns.nic.local.
+a0.dns.nic.local.	518400	IN	A	192.168.2.19