If there are specific domains that your organization would like to block from requesting access to your trust center, you can do so in the Trust Center settings page.
- From the left-hand navigation panel select Trust Center
- Select Settings
- Scroll to the bottom of the settings page
- Select + Block Domain
- Enter the domain you would like to block from requesting access to your Trust Center
- Select Block
Keep in mind that this only pertains to restricted Trust Centers. If your trust center is public, anyone with the link can access what you have published.