Thanks for your reply. We already use wildcards in some cases. However we run many reports for customers who want their own traffic excluded which means we often want to exclude ranges or subnets e.g. x.x.x.128 - x.x.x.255. This is not really practical using wildcards.
So can this be added to a list of requests for new versions?
Before this year, I use User Agent to Filter visitors who come from Amazon Edge, it works fine.
But I recently found some Amazon Egde server's user agent is blank , So the better way I can do is use Host IP filter to exclude them .