A while back I posted on how to use ldp.exe to look up a user in the AD. I left out an important part, which I learned today thanks to the tireless Nino Bilic.

In any LORG, the list of users in a given container is likely to be so large that browsing the tree won't let you see all the users. So use the tip I posted before to find the DN of the user (such as CN=Exchange Goddess,OU=Users,DC=mycorp,DC=com), and then click View | Tree and enter that DN.