Tracking down all of your lenders can be a complicated task. Loans may transfer to a servicer or be sold to another lender. The best way to locate all of your loans and who holds them is the National Student Loan Database System (NSLDS). You can access all of your federal loan information at one location. You need your federal FSA ID to log-in. Please note that this site only lists federal loans. It will not list any private or institutional loans you may have borrowed.