Few days ago I created R301 to one of my sites , the target site were having very few back-links . and I was blocking Ahref using User-Agent and IP's list , but when I looked at my money site back-links today I found Ahref expose it all . MY IP's list toke from me year to collect many of annoying Ahref and Majestic bots . since they update their servers/IP's from . + They cheating by sending their unofficial bots using desktop browser U-A . by this way we can't hide our back-links easy , so how can we be alert of new Ahref Majestic IP changes since they all cheating with their UA like this .