In the event you're becoming impatient, and or are wondering if the rest of the world outside of your ISP can access your new site, you can proxy yourself to another network and test it there. In many cases, you'll be surprised to see your site responding perfectly, yet when you attempt it directly from your ISP's servers, it does not exist.

There are several services, which allow anonymous surfing across the net.

While this is not the intent here, they can be used for trouble shooting domain resolution problems. How?  Because they proxy you through their network, which means your URL requests are controlled by "their" DNS cache records. These services update/expire their DNS cache far more often than ISP's, which makes them well suited for testing your domain name through a network, which operates with the latest DNS updates across the web.

To run this check, you can try accessing your site through one of these two services:

https://www.safeweb.com/o/_s:top.php3

http://www.anonymizer.com/ 

Both of them allow you to enter a URL, and proxy your request through their servers. If your site is accessible from these servers, then chances are, your ISP has yet to expire their old DNS cache records.