Have you uploaded your website, but scared of updating DNS, because you don't actually know will your website work fine here?
There is one cool way to check it, even without updating DNS at all.
Navigate to the directory (simply paste this line to the internet explorer or windows explorer address bar)
You should see file named "hosts", so open this file with notepad.
Now you need to get your server IP address, check for it on members area.
Lets say you are hosted in Server23 and your server IP is 22.214.171.124
So all you need to do now is to paste these 2 lines to the "hosts" file:
That's it, now your computer will think that domain is already hosted on 126.96.36.199, so you can do basic testing and then, finally update nameservers.
do not forget to remove this line from hosts file after you update DNS.
For Linux Users:
If you are a Linux user, the hosts file is located at /etc/hosts