diff --git a/group_vars/all/vars.yml b/group_vars/all/vars.yml
index 77b849e..6243a00 100644
--- a/group_vars/all/vars.yml
+++ b/group_vars/all/vars.yml
@@ -5,6 +5,8 @@ acertmgr_mode: webdir
 acme_dnskey_file: /etc/acertmgr/nsupdate.key
 acme_dnskey_server: neon.binary-kitchen.net
 
+bk23b_domain: 23b.binary-kitchen.de
+
 coturn_realm: turn.binary-kitchen.de
 coturn_secret: "{{ vault_coturn_secret }}"