aha. looks like "luhn check" was the key to a good search here. thanks to Anthony and seb for replying. -----Original Message----- From: Anthony Baratta [mailto:Anthony at Baratta.com] Sent: 22 July 2003 18:35 At 09:56 AM 7/22/2003, David Turner wrote: >hi all, > >does anybody have any asp code that verifies all the following cards? http://www.google.com/search?hl=en&lr=&ie=UTF-8&oe=UTF-8&q=%22credit+card%22 +%22luhn+check%22+ASP&spell=1 -- Anthony Baratta President Keyboard Jockeys