One of the 2 top sections we have not yet touched upon regards the SOA settings. For most purposes you don't need to change these, but if you do need to make a change which needs to be spread quickly through the internet, you can accomplish this by lowering the "minimum" setting. You will need to lower that at least the current minimum ahead of the actual change, 3 hours by default. Click the "dns" link as before and look to the second section down the page, titled SOA settings.