Defender IP Whitelist

I just updated to the latest version of Defender which says it allows for a range of IP addresses to be whitelisted, but when I go to the screen for adding to the whitelist, the help text states that each IP must be entered on a separate line and there's no indication of how to add ranges. If something could be added letting me know how to specify the range, that would be great. Otherwise, it's a great plugin! Thanks!