I am trying to block crawlers on Apache
<Directory /to/my/site/>
Options Indexes FollowSymLinks
AllowOverride All
Order deny,allow
deny from 18.*.*.*
deny from 35.*.*.*
deny from *.us-west-2.compute.amazonaws.com
deny from *.*.compute.amazonaws.com
Allow from all
</Directory>
However this does not seem to block traffic coming from any of these IPs. What am I missing?