From Bravenet Wiki
Managing nameservers is an important part of domain ownership. Nameservers must be properly configured to work with your hosting provider. If you registered a domain with us and haven't transferred it away or otherwise made nameserver changes, your domain is already properly configured.
If you want to host with another hosting provider, you will need to follow the below steps to configure your domain. Please note that we are not able to provide you with another hosting providers nameservers. They must be contacted directly for these.
If you are currently hosting elsewhere and want to switch back to our hosting services, you will have to change your nameservers to the following:
Likewise, if you have recently transferred your domain to us, your domain may not have our nameservers and you will need to change them.
How to Get There
Login to your Bravenet account, select the Domains tab, navigate to the domain you wish to modify from the bottom of the page, and click the Manage Nameservers button from the resulting page.