To exclude all traffic from a given IP or IP range, log in Piwik as the Super User. Click on Administration > Websites. Below the list of websites, you will find the option to specify “Global list of Excluded IPs”. You can define a given IP address, or IP ranges (
143.2.*.* for example) to be excluded from being tracked on all websites. Specify one IP address per line. Each Piwik admin user can also specify the list of IPs or IP ranges to exclude for specific websites.