The Sitecore.Analytics.ExcludeRobots.config file contains a list of IP addresses and user agents to exclude. If a visitor comes to your website from one of the IP addresses in the exclude list, or is a user agent in the exclude list, then the request to view the page is ignored and not tracked.
You can edit this list manually by adding the user agents that you want to block under the node and IP addresses under the node.
To filter by user agent:
Navigate to the Website\App_Config\Include folder and open the Sitecore.Analytics.ExcludeRobots.config file.
Under the node, enter each user agent that you want to block on a separate line.
For example:
UserAgent 1.0 UserAgent 2.0 UserAgent 2.0
To filter by IP address:
Navigate to the Website\App_Config\Include folder and open the Sitecore.Analytics.ExcludeRobots.config file.
Under the node, enter each IP address that you want to block on a separate line.
For example:
10.1.2.3 12.9.2.2 35.2.5.4
Note
Ensure that IP addresses conform to the following supported formats:
IP address example 10.2.3.4
IP range example 10.1.2.3 - 10.1.2.30
Here you find more information: https://doc.sitecore.net/sitecore_experience_platform/setting_up__maintaining/xdb/robot_detection/configure_the_robot_detection_component#_Excluding_user_agents