Domains registered through us as part of your hosting services (either as a primary domain registered at the time of purchase or an extra domain registered through the WebControlCenter) are automatically delegated to the name servers associated with your hosting account. You can verify your domain's current delegation by performing a public WhoIs search at a number of free websites, including http://www.whois.com
If the domain is registered with Newtek through Tucows you can update the name servers by logging in at https://www.webcontrolcenter.com
with your customer id and password.
Go to DNS> DNS Zone Admin. Select the domain you wish to update from the drop down menu and click go.
Under the section labeled Name Servers select update.
Enter the new name servers and select Save.
**It can take up to 72 hours for name servers to propagate through the internet.