diff --git a/whatsapp-router/src/index.ts b/whatsapp-router/src/index.ts
index cceb2c9..cc67b2e 100644
--- a/whatsapp-router/src/index.ts
+++ b/whatsapp-router/src/index.ts
@@ -44,12 +44,19 @@ const app = express();
 
 
 app.use(cors({
-  origin: 'http://localhost:5173',
+  origin: (origin, callback) => {
+    if (!origin || origin === 'http://localhost:5173' || /\.interno\.com$/.test(origin)) {
+      callback(null, true);
+    } else {
+      callback(new Error('No permitido por CORS'));
+    }
+  },
   methods: ['GET', 'POST', 'PUT', 'DELETE', 'OPTIONS'],
-  credentials: true, // si usás cookies o headers personalizados
+  credentials: true,
 }));
 
 
+
 app.use(express.json());