If you have to renew your domain name, change your name servers, change an A-record or change an IP address or DNS setting within your domain name, it can take some time for it to "update" online.
Please review some suggestions below to see if the update has actually happened.
check worldwide DNS propagation, to ensure that it is showing the correct address: https://www.whatsmydns.net/#A/domainname
you can also check this site - http://hostadvice.com/tools/whois/ to find the details of the web hosting provider
clear your browser's history, cookies and cache found under settings - close and then reopen your browser
If you can’t see the site, then another item you can try is to flush your DNS resolver cache on your system.
For ISP domain caching, there’s nothing you can do about that, just takes time to refresh.
To flush your DNS resolver cache, you need to do the following:
Go to your start menu and type CMD for the command prompt.
In the command prompt, type ipconfig /flushdns and hit ENTER.
Try to view the site again and see if it comes up.
Try checking your website through another device, if it shows up fine, then it will eventually update on your computer.
If you are still having issues, please email us at firstname.lastname@example.org