Talk:Bank card number
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[edit] Luhn algorithm
Do any issuers not use the Luhn algorithm? If so, which? -- The Anome 03:12, 15 January 2006 (UTC)
- I believe that the enRoute card did not have any validation algorithm. I'll look for a source. –BozoTheScary 20:37, 30 January 2007 (UTC)
This is the LUHN algorithm in PHP: http://www.itoctopus.com/index.php?option=content&task=view&id=26&Itemid=26
[edit] CVV2
[edit] Electron
Is it really true that Visa Electron cards all start with 417500? This seems unlikely and I see places on the web that seem to indicate otherwise. - mgolden
Electron Cards can start with any IIN number issued by Visa. There is no specific range, if you apply for an Issuing, Classic Credit, Gold Credit and Electron Debit at the same time, the numbers will often be consecutive. It is not possible to identify the type of card product directly from the IIN only, you need the table provided by Visa that lists what each one has been allocated for. Mumfords (talk) 14:43, 29 December 2007 (UTC)
[edit] Diners
This page: http://www.precisonline.com/ccvalidate.js.html seems to indicate that Diners can also start with 36 38 and 300-305. - mgolden July 24, 2006
The "Diners Club US & Canada[5]" overlaps with the Mastercard range, both of which are 16 digits, starting with '55'. I suspect the Diners Club is wrong (unless their cards are supplied by Mastercard?)
I believe that MasterCard bought this part of the Diners business, but that there may still be some "Diners" cards within this sequence, however operated by MasterCard. —BozoTheScary 21:35, 19 July 2007 (UTC)
[edit] credit card number dumps
what info. can Wikipedia come up with on this subject on credit cards? --Zzardzzard 02:24, 20 August 2006 (UTC) where are credit card numbers on the card?
Where are credit card numbers?--Dark Kirby5 18:48, 28 January 2007 (UTC)
[edit] Switch (Debit Card)
Found out that Switch will continue to exist until mid 2007. See http://www.maestrocard.com/uk/about/switch_to_maestro.html. —The preceding unsigned comment was added by Dysanovic (talk • contribs) 16:30, 2 February 2007 (UTC).
The article states that Maestro's direct competitor is Visa Electron but this is wrong. Maestro is not an electronic transaction only card whereas Visa Electron is. Maestro's direct competitor is Visa Debit/Delta. Solo is the direct competitor to Visa Electron.
Visa Delta and Solo are both electronic transaction only cards. This means that all transactions must be verified by a card processor before the transaction can take place. They cannot be used where this cannot happen (e.g. on old Zip-Zap machines). —Preceding unsigned comment added by 82.111.251.44 (talk) 10:30, 18 October 2007 (UTC)
[edit] Title
Why is the title of this article "Credit card number" when it also talks about debit card numbers? (Stefan2 00:20, 7 June 2007 (UTC))
- That's a good question. Likely, part of the reason is that the debit cards use credit card conventions, like the Luhn algorithm. There may also be some similarities in the underlying transaction systems. Feel free to suggest a more accurate name. —BozoTheScary 01:58, 7 June 2007 (UTC)
- The point that you bring up is interesting, however both cards function differently, as do bank cards and other credit society card numbers. I think it would be more pertinent to merge the details with BIN as already suggested and list the different types of cards under BIN with links to the different card types.
--imag1nation (talk) 05:16, 6 December 2007 (UTC)
[edit] References
- 7, Cardholder Identification and Authentication, seems to be a broken link.
[edit] 38
http://www.merriampark.com/anatomycc.htm#Account also lists 38 as being valid for Diners, but per the article here, 38 is not used. Can anyone clarify? Also, is there any one authority for cc numbers, or are companies simply agreeing to conform to the Luhn algorthm? Michael Hodgson 02:42, 16 August 2007 (UTC)
[edit] Electron
I have found other prefixes for electron cards in the UK.... "491880", "49173", "49174", "49175", "424519", "424962", "424963", and "459875". Are there any more? Is there a list of prefixes for Visa Purchasing and corporate cards? —Preceding unsigned comment added by 71.111.254.67 (talk) 15:50, 27 September 2007 (UTC)
There are many IIN numbers allocated to Electron Cards. The only source for the list is Visa, it is updated and provided weekly to all Visa Members. In general the list is not easily available outside the industry because of the potential for assisting fraudsters with BIN attacks. Mumfords (talk) 14:49, 29 December 2007 (UTC)
[edit] Maestro debit card numbers
Does anyone know whether MasterCard intends to standardise the format of Maestro card numbers, which currently come in at least two forms? Currently (here in UK) some have 18 digits and use a 1 or 2 digit issue number as part of the verification process. Others (mainly from the Royal Bank of Scotland Group) have a 16 digit number and use a start date as part of the verification process, though the actual verification of start dates is not as strict as with issue numbers. I'm wondering, will either of these formats become standard? And why don't they just use the same items for verification as VISA, VISA Delta, and MasterCard cards do?--PeterR (talk) 19:37, 13 December 2007 (UTC)
[edit] Number combinations
How long would it take before every number combination will be used up? Or it will probably never happen in the forseeable future as each banking institution can issue up to 10 billion combinations or 20 billion if a bank offers both VISA and MasterCard. Jungworld.com (talk) 02:22, 14 April 2008 (UTC)
[edit] Why the undiscussed move?
Changing this article's name doesn't seem to make sense - Google shows me over 8 million hits for the phrase "Credit card number", only 38 thousand for "Bank card number". Please move it back to a title readers will expect. --CliffC (talk) 15:38, 1 June 2008 (UTC)
