DNS is short for "Domain Name Server". It is a computer on the internet that translates a domain name (that humans can read), to an IP address (whish is what computer understands). For example, you would understand what www.organicwebs.com.au means - but a computer would know our website as

You computer needs to find these IP numbers regulary - so to speed things up, your computer will store the recent addresses in a file called a Cache.

Server IP's will change from time to time. This typically happens when we move the server to another datacentre. If there has been a DNS change, we need to tell your computer to forget is own list of address and get a new list. This is called "Flushing the Cache".

On your Windows PC...

  • Go to the Start Menu and search for cmd
  • Run cmd.exe as Administrator (right mouse click to see this option).
  • A black window will pop up. That's your "Command Line".
  • Type   ipconfig /flushdns

Note: The DNS cache is unique to the visiting PC and is shared across all browsers. Swapping browsers will not flush the DNS or reset the TTL.

To check to see if you computer has remembered to correct IP address, type this in your Command Line:

nslookup organicwebs.com.au

and you should see our IP address as