Organization Relationships, True/False Flag for large list

Has anyone figured out a way to bulk find organization relationships? I know they have an endpoint to look a single ID but I was wondering if I have a list of say 4,000 records. How can I return a a true/false flag if any relationship exist with each ID?

Thanks for bringing this to our attention. I’ll have it moved to #feedback for broader visibility.
In the meantime, you might find this wiki useful