diff --git a/ts3-client/core/src/main/java/com/ts3client/net/TeamspeakConnection.java b/ts3-client/core/src/main/java/com/ts3client/net/TeamspeakConnection.java
index f12af00..fb819f0 100644
--- a/ts3-client/core/src/main/java/com/ts3client/net/TeamspeakConnection.java
+++ b/ts3-client/core/src/main/java/com/ts3client/net/TeamspeakConnection.java
@@ -141,6 +141,8 @@ public final class TeamspeakConnection implements TS3Listener {
     /** Guards against announcing the same disconnect from both the event and the teardown. */
     private volatile boolean disconnectAnnounced = true;
     private volatile long lastMutedTalkNanos;
+    /** The server's error id for why the last connect was refused; 0 when it was not. */
+    private volatile int connectErrorId;
 
     public TeamspeakConnection(Settings settings, AudioBackend audio, ConnectionListener ui,
                                SoundNotifier sounds, ContactStore contacts) {
@@ -173,6 +175,14 @@ public final class TeamspeakConnection implements TS3Listener {
         return playback;
     }
 
+    /**
+     * The error id the server refused the last connect with ({@code 3329} for a ban,
+     * for one), or 0 when it was not refused or did not get that far.
+     */
+    public int getConnectErrorId() {
+        return connectErrorId;
+    }
+
     /** The identity this connection authenticated with. */
     public LocalIdentity getIdentity() {
         return identity;
@@ -257,6 +267,7 @@ public final class TeamspeakConnection implements TS3Listener {
                            String channel, String channelPassword) {
         Object attempt = new Object();
         connectAttempt = attempt;
+        connectErrorId = 0;
         // A socket or audio line an earlier connect left behind must not outlive it.
         connected = false;
         safeCleanup();
@@ -363,6 +374,7 @@ public final class TeamspeakConnection implements TS3Listener {
             // connect has set up in the meantime.
             if (connectAttempt != attempt) return;
             connected = false;
+            connectErrorId = refusalId(e);
             String failure = "Connection failed: " + rootMessage(e) + versionHint(e);
             ui.onError(failure);
             safeCleanup();
@@ -373,6 +385,13 @@ public final class TeamspeakConnection implements TS3Listener {
         }
     }
 
+    private static int refusalId(Throwable e) {
+        for (Throwable t = e; t != null; t = t.getCause()) {
+            if (t instanceof CommandException refusal) return refusal.getErrorId();
+        }
+        return 0;
+    }
+
     /**
      * "client is modified" is what a server answers when it does not accept the reported
      * version: too old for its minimum, not a version it knows for that platform, or a