Bank Routing Numbers: is there a table somewhere?

We acquired a business. I need to load their vendor information into our system, including their banking information. Our practice is to put the name of the banking institution into the Description field. Does anyone have a table (or could point me to a table on the internet) where I could get a listing of bank routing numbers so I can do a Vlookup and get this info? The only thing I can find is to be able to look them up one at a time. (Enter the routing number and see what institution it is.)