diff --git a/Build/MQTTnet.nuspec b/Build/MQTTnet.nuspec
index e055a25..9e25687 100644
--- a/Build/MQTTnet.nuspec
+++ b/Build/MQTTnet.nuspec
@@ -26,6 +26,7 @@
 * [Server] Added interceptor for unsubscriptions.
 * [Server] Removed exceptions when user properties are set with MQTT protocol version 3.1
 * [Server] Added custom session items to the client status.
+* [Server] Added option to check whether the server is already started properly or not.
 * [MQTTnet.AspNetCore] improved compatibility with AspNetCore 3.1
 * [MQTTnet.Server] Added interceptor for unsubscriptions.
     </releaseNotes>
diff --git a/Source/MQTTnet/Server/IMqttServer.cs b/Source/MQTTnet/Server/IMqttServer.cs
index c080f4e..41c6dc0 100644
--- a/Source/MQTTnet/Server/IMqttServer.cs
+++ b/Source/MQTTnet/Server/IMqttServer.cs
@@ -27,5 +27,7 @@ namespace MQTTnet.Server
 
         Task StartAsync(IMqttServerOptions options);
         Task StopAsync();
+
+        bool IsStarted { get; }
     }
 }
\ No newline at end of file
diff --git a/Source/MQTTnet/Server/MqttServer.cs b/Source/MQTTnet/Server/MqttServer.cs
index ea687eb..a8c4369 100644
--- a/Source/MQTTnet/Server/MqttServer.cs
+++ b/Source/MQTTnet/Server/MqttServer.cs
@@ -190,6 +190,8 @@ namespace MQTTnet.Server
             return _retainedMessagesManager?.ClearMessagesAsync();
         }
 
+        public bool IsStarted => _cancellationTokenSource != null;
+
         private Task OnHandleClient(IMqttChannelAdapter channelAdapter)
         {
             return _clientSessionsManager.HandleClientConnectionAsync(channelAdapter);