Depending on which server you are on, you could have various name servers.
Please check your "New Hosting Account Information" for your particular name servers for the server that you are on.
If you no longer have that email, you can view a copy of it in our client panel.
Go to your Account.
Click on "My Emails" in the menu.
Find and click "New Hosting Account Information" in the list of sent emails.
Your nameservers will be listed in that email.