Block certain user on BPS

the full user host name changed with each lock out.
here is one:
User Hostname: ec2-52-19-14-28.eu-west-1.compute.amazonaws.com

but it always ends in
compute.amazonaws.com
or
compute-1.amazonaws.com

do i have to write my code a bit differently to indicate it is the user name ending in
compute.amazonaws.com
or
compute-1.amazonaws.com
?

thanks

well we get lock outs every time the bots crawl our sites and the clients can’t login.

hi, ya it didn’t work.
here is one of the logs. i just took out our info. each one of our sites got around 5 lock outs per day during the last 2 days and we have 20 sites.

A User Account Has Been Locked

To take further action go to the Login Security page. If no action is taken then the User will be able to try and login again after the Lockout Time has expired. If you do not want to receive further email alerts change or turn off Login Security Email Alerts.

What to do if your User Account is locked and you are unable to login to your website: Use FTP or your web host control panel file manager and rename the /bulletproof-security plugin folder name to /_bulletproof-security. Log into your website. Rename the /_bulletproof-security plugin folder name back to /bulletproof-security. Go to the BPS Login Security page and unlock your User Account.

What to do if your User Account is being locked repeatedly: Additional things that you can do to protect publicly displayed usernames, not exposing author names/user account names, etc.: http://forum.ait-pro.com/forums/topic/user-account-locked/#post-12634

Username: ######

Status: Locked

Role: administrator

Email: ########
Lockout Time: February 4, 2016 10:07 pm

Lockout Time Expires: February 4, 2016 11:07 pm

User IP Address: ########

User Hostname: ec2-52-193-52-39.ap-northeast-1.compute.amazonaws.com
Request URI: /wp-login.php

Site: #########