If you would like to change the nameservers of multiple domains at once, follow these steps:
How to change nameservers in bulk
- Log in to your name.com account.
 - Click on the My Domains link, located on the top right of the navigation.
 - Check the box to the left of each domain you would like to edit.
 - Click the Bulk Tools button and click Edit Nameservers.
 - You will see four blank fields appear under the heading Enter Your New Nameservers. Enter one nameserver in each blank space.
 - Once you have entered all of your nameservers, click Update Nameservers.
 
Please keep in mind that you will need at least two nameservers to perform a bulk action. Once you have changed your nameservers, it will take roughly 24 hours for the changes to propagate.
