EIN number

Watching Brian green (who is basically using the audio provided in jurisdiction seminars page two bottom of page)and I like his approach, does a decent throughout his situation which he's posted every one.. though im trying to figure out how he obtained evidence that they are all under the same EIN number?so I might be able to use it as evidence of a conflict of interest. here's his link. its on 5:00 when he gets into that particular part.https://www.youtube.com/watch?v=jI0thqq4Dmw