If you registered your domain name through a third party registrar such as Network Solutions, GoDaddy, or Register.com and will run it on our hosting servers, you must login to your account with the registrar (or call them), and change your domain's name servers. When you registered your domain name, the registrar typically sends you a user name or account number, a password, and a Web address for you to manage the domain. You will need this information to change its name servers. If you do not have it, you should contact your registrar for help.
You can find your domain information, including current name servers, registrar name and registrar contact information by any free whois service available. For example, you can do this at url below:
GoDaddy Free Whois Service
You can find our name servers in your account Welcome email. If you do not have it, please contact support, we'll resend it to you.
Name server changes do not take effect immediately. It can take up to 72 hours for a this change to take effect. Until the than, you can access your account via temporary url provided in your Welcome letter.