diff --git a/rtfd/public/ssh/index.rst b/rtfd/public/ssh/index.rst
index c91e3cc..38193b5 100644
--- a/rtfd/public/ssh/index.rst
+++ b/rtfd/public/ssh/index.rst
@@ -23,6 +23,13 @@ Create key
 
 .. todo:: other arguments
 
+DNS fingerprint
+---------------
+
+.. code-block:: shell
+
+ ssh-keygen -f public_key -r domain.tld
+
 Public key
 ----------