Site Lists
Site Lists are used to group website domains for targeting across Campaigns and Lines. They are intended for Web inventory and can be applied as either an Allow List or Block List.
If no Site List is applied, domain targeting remains open by default, subject to any other Campaign or Line targeting settings.

Create Custom Site Lists:
- Navigate to the Inventory tab.
- Select New Site List.
- Name the new Site List.
- Enter each website on a new line.
- Note that the URL should include top-level domain, second-level domain, and subdomains if applicable. URLs should not include the scheme, such as https://, or subdirectories.
- Once saved, the Site List will automatically become available under the Campaign and Line Targeting menu:
- Dropdown List > Inventory > Site Lists
- The list can then be applied as an Allow List or Block List.

For guidance on using Site Lists with App Lists and different Inventory Types, see the Site and App List Targeting section: Inventory Overview