1. Navigate to Admin | Automation Settings | Visitor Filters.
2. Click +Add Filter.
3. Name the filter.
4. Choose a filter type.
5. Enter a value for the filter. You can use wildcards to exclude a range of IP addresses or subdomains.For example:Entering 198.168* filters out visits from IP addresses that begin with 192.1268Entering *.pardot.com filters out visits from hostnames that end with .pardot.com
6. Entering 198.168* filters out visits from IP addresses that begin with 192.1268
7. Entering *.pardot.com filters out visits from hostnames that end with .pardot.com
8. Click Create Filter to save.