Removing IP addresses from the name-based list
You can remove IP addresses from the name-based IP address list only if no sites are using the IP address. If the IP address is in use, you need to remove the sites that are using it before you can remove the IP address.
To remove an IP address from the name-based list:
On the top navigation bar, click server, then click the name-based ip addresses tab.
Select the IP address you want to remove, then click remove on the action bar.
In the confirmation box, click OK. The IP address is removed.