[Black Tiger]

You can also use it like this.

Order Deny,Allow
Deny from 185.53.44.0/22
Deny from 185.53.44.1
Deny from 185.53.44.2/31

etc.
Allow from all tag is not needed in this case.

Or use this tool:
http://www.htaccesstools.com/block-ips/

Dr. Custumz method is also correct if you use the allow,deny order, both correct.

Order allow,deny tells your web server that the Allow rules are processed before the Deny rules. If the client does not match the Allow rule or it does match the Deny rule, then the client will be denied access.

Order deny, allow means that the deny rules are processed before the allow rules. If the client does not match the deny rule or it does match the allow rule, then it will be granted access.