Yes you can!
In order to exclude any undesired data from your search results.
- Log into your Companywell account.
- Navigate to your account settings located at the top, right hand side of the screen.
- Click on the exclusion list option.
- Click on the 'Manage' Section.
- Click on 'Add Exclusion'.
In this section, you can either add the domains of companies you wish not to see in your search results or add the email addresses of contacts you wish not to see again.