There are a number of reasons, you might not be able to view your site. Here are some:

1. Your domain has not completely resolved. It usually takes 24-72 hours to fully propagate.
2. If you moved your site to a new provider and your nameservers are correctly configured:
   1. Windows Users: Go to Start > Run > Type cmd > Enter > Type ipconfig /flushdns
3. You can go to: http://www.stealthproxyuk.com/ and type in your domain name.
   1. If your domain is not visible, double check your nameserver configuration
   2. If your site is visible, proceed to the next steps.
4. If step 3(B) worked and you are using a broadband connection, follow these steps:
   1. Disconnect the power to the broadband modem and router (if applicable).
   2. Wait 10-15 minutes. This will help clear the old cache or reset the modem.
   3. Plug the router in first (if applicable), then the broadband modem.
   4. Go to your website and press F5 a few times to refresh the browser.
5. If your site is till not visible, contact your ISP
   1. Tell them you can’t view your site and ask them if they can see your domain?
   2. Ask them to refresh your account to clear all DNS history.

Just keep this in mind, they will never admit they are at fault at times.

You may also ask friends or family that are using different providers to check to see if they can view your site also.