Log in to your 1&1 Control Panel and select the relevant package.
From the Domains panel, click on Manage Domains.
Click the arrow icon next to the domain in question to display the domain options drop-down menu.
Select Edit DNS Settings from the DNS Settings section of the options drop-down menu.
If you are currently using a CNAME with the domain, you will not be able to set which name servers should be used with the domain unless you select Edit DNS Settings from the domain options drop-down menu. Select Other name servers from the Basic DNS Settings section.
- Enter the first name server address into the Primary name server text box.
- Select My secondary name server from the Secondary name server drop-down box to add a second address.
- Enter the second name server address into the 1st secondary name server text box.
- Click on Save to proceed.
You may add a third and forth name server address if necessary however only two are required.
All DNS changes may take up to 72 hours to be fully updated and recognised by all servers/computers on the Internet.