DeCav wrote:What do you mean by "range"?
I see where you can see the IP address used but how do you determine a "range"?
If you click on the WHOIS link it will usually tell you who the spammer's internet provider is and what range of IP addresses they own. If the provider is Hainan Province Telecom, China for example, I block the whole range, not just the IP address that our spammer was using.
Sometimes the WHOIS link is ambiguous, in those case a simple google search will usually tell you where an IP address is located.
This website has been helpful: http://www.stopforumspam.com/