You can list all of your subcustomers
You can view basic details for all of the subcustomers you've registered for a specific base configuration. This includes the geographic region ("geo") and the digital properties associated with the subcustomer.
This is accomplished by running the "List all subcustomers" operation via the ACE API. You'll need the following values to run this operation:
propertyId: This is the unique ID value associated with the base configuration that houses the subcustomers you want to list. Contact your Account Representative for this value.
network: This is the network version of subcustomers you want to list: production (live) or staging (testing).
Review the ACE API docs
Call formatting and other specifics are covered in the ACE API documentation: