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AVS Address Verification System of BOTH Credit and Debit Cards - WHERE, HOW? 
Parts of what you want are possible, but taken as a whole, you're out of luck. First of all, there is no master database of every cardholder in the country.  The only way to check if information is correct is to ask the issuing bank.  The AVS system is a way to automate doing so, but it's possible to call the bank directly and verbally verify the address.   That means you're subject to the whims of what the issuing bank chooses to support.  Banks that are part of the Visa and MasterCard networks generally only verify the numeric parts (address, apartment number, zipcode).  AmEx can also verify the cardholder name.  But if the bank doesn't have support for validating something, you can't validate it. Separately, there is a "verify-only" transaction which some processors support, which will do exactly what you want:  Return AVS values without ever charging the card.  However, processors require you to have the "approved merchant account" you don't want to have to have.  Without being a merchant, you shouldn't have access to other people's credit cards anyway.  Would you really want anyone in the country to be able to verify anyone else's address whenever they want? In short, whatever purpose you have for wanting this probably falls into one of three categories: