Recursive DNS -- Readme

Recursive DNS access is limited to an IP access list. That list is updated every 10 seconds and is based on the IP address(es) associated with the service. If you are using a dynamic IP service, you will need to update that hostname with your IP address so that the service will respond to your queries.

If you are on a dynamic IP address or are traveling, you can use an update client to update your Recursive DNS host. Hosts which are not on the access list are still able to resolve our website and our update hostname.