Step 1
Log in to your 1&1 Control Panel and select the relevant package.
Step 2
Click on Domains in your control panel 

Step 3
Select the domain you'd like to change name servers for
Step 4
Click "Advanced Settings" 
Step 5
Select "Edit DNS settings" , then "Other Name servers"
Step 6
  • 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.
Please note:
You may add a third and forth name server address if necessary however only two are required.
Please note:
All DNS changes may take up to 72 hours to be fully updated and recognised by all servers/computers on the Internet.


1&1 Instructions Here

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