CyberCash (www.cybercash.com) used to have references on their site --- you might check there to find what you're looking for.
Regards, Joel Parramore > -----Original Message----- > From: Jim McAtee [mailto:[EMAIL PROTECTED]] > Sent: Thursday, November 29, 2001 12:03 AM > To: CF-Talk > Subject: Re: Credit Card Validation > > > Lee, > > Thanks. I've come across similar tables. Trouble is each of > them contains > one or two more prefixes than the last one. For example, I've > also seen the > prefix 38 listed for Diners Club. Obviously prefixes are being added, > albeit slowly, as needed. If I'd relied on the first table I came across, > published maybe two or three years ago (Who knows when - it was on some > developer's website without a date), then I might be rejecting cards that > were issued in the last couple of years. > > I've got the Luhn mod-10 checksum algorithm implemented in both JavaScript > and CFScript. I've also come across mention of a "check digit" (rightmost > digit) and another algorithm to do a checksum against this digit. Perhaps > it's just an alternative way of doing the mod-10 checksum. I haven't > examined it that closely. > > What I'm really looking for is a more authoritative source for this > information. > > Jim > > > ----- Original Message ----- > From: "Lee Fuller" <[EMAIL PROTECTED]> > To: "CF-Talk" <[EMAIL PROTECTED]> > Sent: Wednesday, November 28, 2001 9:35 PM > Subject: RE: Credit Card Validation > > > > Actually, here's even more info... > > > > > > > > *CARD TYPES *PREFIX *WIDTH > > American Express 34, 37 15 > > Diners Club 300 to 305, 36 14 > > Carte Blanche 38 14 > > Discover 6011 16 > > EnRoute 2014, 2149 15 > > JCB 3 16 > > JCB 2131, 1800 15 > > Master Card 51 to 55 16 > > Visa 4 13, 16 > > > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Get the mailserver that powers this list at http://www.coolfusion.com FAQ: http://www.thenetprofits.co.uk/coldfusion/faq Archives: http://www.mail-archive.com/[email protected]/ Unsubscribe: http://www.houseoffusion.com/index.cfm?sidebar=lists
