This article will explain how you can edit/cancel additional IP addresses for your 123-reg VPS.
In the VPS section, click on the Manage link.
Click on the Manage button next to the VPS you wish to configure.
Click on the IP tab.
Click on the Edit or Cancel link next to the additional IP address you wish to change.
If you choose to edit, select a new domain to assign to the IP from the drop down list. Then click on the Assign Domain button.
Click the Yes button to confirm.
If you choose to Cancel click on the Yes button to confirm.