diff --git a/content/codeberg-pages/using-custom-domain.md b/content/codeberg-pages/using-custom-domain.md
index 0560078..775060a 100644
--- a/content/codeberg-pages/using-custom-domain.md
+++ b/content/codeberg-pages/using-custom-domain.md
@@ -221,6 +221,14 @@ After the first successful deployment you can change it to the `https://` scheme
 **If you deploy from Forgejo Actions,**
 the `site` parameter to the git-pages action should be set to the URL of your custom domain, and the `server` parameter should be set to `codeberg.page`. The [Forgejo Actions guide](/codeberg-pages/forgejo-actions/) includes example workflows and more information.
 
+{% admonition "info" "Notice" %}
+
+If you wish to deploy your site to multiple (sub)domains, you must add a webhook or deployment action (and the respective DNS setup) for each of them.
+
+If you are using a custom domain, you do not need a `codeberg.page` webhook unless you also want your site to be available from the respective `codeberg.page` URL.
+
+{% endadmonition %}
+
 ### Deploying to versions of your domain both with and without `www.`
 
 If you would like to serve your website at versions with and without a `www.` prefix,