Google Public DNS Server

Change the DNS server addresses to the Google Public DNS servers 8.8.8.8 and 8.8.4.4

Clearing Your DNS Cache

Your DNS cache stores the locations (IP addresses) of pages you have recently viewed. If the location of the page changes before the entry in your DNS cache is updated, you will be unable to access the page. If you are encountering a high number of HTML 404 error...