diff --git a/master/db.arpa.ip6.2.a.0.3.2.2.6.7 b/master/db.arpa.ip6.2.a.0.3.2.2.6.7
index 4a9d02c..78bc569 100644
--- a/master/db.arpa.ip6.2.a.0.3.2.2.6.7
+++ b/master/db.arpa.ip6.2.a.0.3.2.2.6.7
@@ -13,6 +13,13 @@ $TTL 86400	; 1 Tag
 @			NS	named.exosphere.de.
 @			NS	ns.ohrensessel.net.
 
+; Dokumentation
+; Hamburg 	2a03:2267:0000::/48
+; Helgoland 	2a03:2267:4e16::/48
+; FFNord 	2a03:2267:4e6f::/48
+; Intern	2a03:2267:ba5e::/48
+; Transportnetz	2a03:2267:ffff:://48
+
 ;2a03:2267::/64
 ;TODO add srv02 as slave
 0.0.0.0.0.0.0.0.7.6.2.2.3.0.a.2.ip6.arpa. NS srv03.hamburg.freifunk.net.