Your Realtor needs the address to find out what bank foreclosed on it. Is there a sticker or any notices posted on the windows? If so, write down that information, too.
Most banks will list with one of there REO agents and have them put it on MLS in order to get as many offers as possible so the bank can pick and choose, but sometimes they will go to county auction first. If you want to contact the bank directly, that is fine, but your Realtor will have access to more information. Some websites will offer information, but for a steep fee. Realtors get paid by the seller, in this case, the bank.