diff --git a/docs/friends.md b/docs/friends.md
index 3063a66..84ea6f9 100644
--- a/docs/friends.md
+++ b/docs/friends.md
@@ -47,3 +47,4 @@ Please, let me know so I can add your company name here.
 * MontanaSky Networks (AS18897)
 * FPTCLOUD (AS140766)
 * Wikimedia Foundation (AS14907)
+* SIDN (AS1140)