Who actually uses these numbers on Bloomberg?

So if you have access to a Bloomberg terminal, then you probably know that you can get the contact info of some of the biggest names on Wall St. Are these just secretaries' numbers, or if I actually called one, would I be connected right to Lloyd Blankfein? Not that I would, because he doesn't have time for that, but seriously... why do they post that info on Bloomberg? Could this contact info be used carefully and advantageously in securing an unprecedented summer internship?