Retrieve All Lists a Subscriber is On
By retrieving all of the lists a subscriber is on, you can understand which email sends a subscriber receives and whether that subscriber is removed from these lists. You can use this in your Subscription Center to show to which lists an individual subscriber is subscribed.
This call also returns any groups associated with the subscriber's email address. Perform a follow-up call using the specific ID to determine if that ID refers to a list or group.
Use the sample code below as an example to construct your own API calls. The describe call can be used to retrieve the retrievable properties for the ListSubscriber object.
This example uses the subscriber key to return all of the requested lists.