On Apr 27, 2007, at 3:10 PM, anansi wrote:

> James Edward Gray II wrote:
>> On Apr 27, 2007, at 12:58 PM, Matthew Moss wrote:
>>> So is a card number like "4012 3456 7890" a valid Unknown, or an  
>>> invalid Visa?
>> Visa Invalid
>> Always match the type first.
>
> Nope thats no Visa number but a unknown one. Visa Cards have a  
> certain length (13 or 16) and if that length doesn't fit (Matthew's  
> number here had just 12 digits)it's unknown :) otherwise the length  
> would be obsolete don't you think?
> Both length and startingbytes have equal weight in the decision  
> wether a card belongs to a known Company or not.

You are right.  I didn't read well.  It's Unknown.

James Edward Gray II