RewriteCond %{HTTP_USER_AGENT} ^$ [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^.*NetStat.* [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^.*Lynx.* [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^.*MSFrontPage.* [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^.*Teleport.* [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^.*WebCopier.* [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^.*download.* [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^.*rufus.* [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^.*WiseNut.* [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^.*perl.* [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^.*pump.* [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^.*Muncher.* [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^.*libwww.* [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^.*findlinks.* [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^.*amfibi.* [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^.*Accoona.* [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^.*turtle.* [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^.*cfetch.* [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^.*ejupiter.* [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^.*eStyleSearch.* [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^.*aipbot.* [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^.*Watchman.* [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^.*Gigabot.* [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^.*WebDAV.* [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^.*snap.com.* [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^.*Goon.* [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^.*voyager.* [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^.*appie.* [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^.*whois.* [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^.*faxo.* [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^.*goku.* [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^.*imrt.* [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^.*domaintools.* [NC]
RewriteRule ^(.*)$ - [F]