You will get this webpage if you attempt to view a name-based website by IP address for a Plesk-based hosting account (Upipe, MDH, OHP, WebPro).
To view your domain before you update your name servers at your registrar, you will want to modify your hosts file to temporarily associate your website's hostname with that IP address. For more information on how to modify your hosts file see the following knowledgebase article:
http://kb.simplywebhosting.com/idx/0/045/article/