"Unknown" Causes: Unexpected or unannounced maintenance (emergency or critical work) Networking issue with upstream provider DDoS attack (even in the protected locations, there is a limit to which a DDoS can be protected) Other causes, please inquire within   Feel free to submit a ticket so we can help you and provide you with additional information. https://survivalservers.com/support/   Otherwise, this is the thread you can post in and we