diff --git a/README.md b/README.md
index a3717f2..8f1fde7 100644
--- a/README.md
+++ b/README.md
@@ -55,6 +55,7 @@ Before running mimic, create **A records** pointing to your server's public IP f
 
 | Subdomain | Required? | Purpose |
 |---|---|---|
+| `<domain>` | Always | Base Url |
 | `matrix.<domain>` | Always | Synapse homeserver |
 | `auth.<domain>` | Always | Matrix Authentication Service |
 | `app.<domain>` | If a web client is selected | Element / Cinny / FluffyChat |