diff --git a/README.md b/README.md
index 1783916..061b412 100644
--- a/README.md
+++ b/README.md
@@ -23,6 +23,24 @@
 }
 ```
 
+Only send DNS query for assigned domain patterns:
+
+```json
+{
+  "groups": [
+    {
+      "lookup_dns": false,
+      "dns_domains": [
+        "example.com",
+        "*.example.com",
+        "example.*",
+        "*.example.*"
+      ]
+    }
+  ]
+}
+```
+
 Generate self signed certificate:
 
 ```shell