You can change the order in which the host names are listed under the IP addresses by moving them using the Move Up and Move Down commands (or by pressing the Ctrl+Up and Ctrl+Down keys):
When resolving host names to the IP addresses, the host names are processed in the order they appear in the HostName Commander window. You may want to move the host names you use most closer to the top of the list, to improve the performance.
You can also move the whole groups of the host names that belong to the same IP address by moving the IP addresses themselves.
Note also that instead of using the Move Up and Move Down commands, you can also drag and drop the host names and IP addresses with the mouse, in the same way as you would drag and drop files and folders in Windows Explorer.