225913 blacklist

I am in need of a simple program that will allow my employees to enter a dot number and/or company name into a db which will then pop up any matching information to tell them if they have blacklisted a transport company. Each time one of our customers have a negative experience, the company is added to our blacklist so that we do not use them again. Initially we would be loading 200 plus companies into the data base. I have checked a couple of programming options, however I am open to suggestions.