For usage in a browser.

Nginx sends the response as an application/octet-stream so browsers try
to download it.

conf.d/myip.shore.co.il.conf

@@ -19,5 +19,8 @@ server {
     include             snippets/security-txt.conf;
     include             snippets/ssl.conf;
     error_page 404      /;
-    location = /        { return 200 "$remote_addr"; }
+    location = /        {
+        add_header Content-Type "text/plain; charset=utf-8";
+        return 200 "$remote_addr";
+    }
 }