Card Number Structure
An ISO/IEC 7812 number is typically 16 digits in length. It consists of:
- a six-digit Issuer Identification Number (IIN) [ previously BIN ], the first digit of which is the Major Industry Identifier (MII), e.g. Visa
- a variable length (up to 12 digits) individual account identifier.
- Typically BIN+4 will designate a given portfolio, e.g. Visa Gold with customers with a certain risk profile
- Last 6 are not randomized, may be contiguous (as close as Luhn check allows)
- a single check digit calculated using the Luhn algorithm.
Test Card Numbers
Most Common Test CCNs:
| CREDIT CARD |
TEST ACCOUNT NUMBER |
| Visa |
4111 1111 1111 1111 |
| MasterCard |
5555 5555 5555 4444 |
| American Express |
3782 8224 6310 005 |
| Discover |
6011 1111 1111 1117 |
| JCB |
3566 1111 1111 1113 |
More Detailed:
|
Cardtype
|
CC number
|
CV2/CVV
|
Start date (YYYY/MM)
|
Expiry date (YYYY/MM)
|
Currency
|
|---|
|
Visa
|
4111 1111 1111 1111
|
111
|
|
2011/08
|
USD
|
|
Diners
|
3041 4393 953 143
|
888
|
|
2011/08
|
USD
|
|
Mastercard
|
5105 7814 5497 5390
|
132
|
|
2011/08
|
USD
|
|
Discover
|
6011 0009 9068 5244
|
111
|
|
2011/08
|
USD
|
|
JCB
|
3528 0001 1234 5670
|
616
|
|
2011/08
|
USD
|
|
AMEX
|
3402 0715 6440 372
|
0965
|
|
2011/08
|
USD
|
|
Electron
|
4844 4412 8367 2242
|
344
|
|
2011/08
|
GBP
|
|
Dankort
|
4571 0011 1365 9873
|
481
|
|
2011/08
|
DKK
|
|
China Unionpay
|
6221 2600 8383 6130
|
111
|
|
2011/08
|
USD
|
|
Switch
|
4903 0300 3486 2499 872
|
123
|
2006/07
|
2011/08
|
GBP
|
|
Delta
|
4988 2444 3212 3448
|
766
|
|
2011/08
|
GBP
|
Luhn Test:
Simplistic Regex:
find . -type f -print0 | xargs -0 grep -alE '[^\d]\d{4} ?\d{4} ?\d{4} ?\d{4}[^\d]'
Not allowed in Logs
From: Michael Wyatt
Sent: Friday, July 12, 2013 7:48 AM
That is correct, for PCI, only the PAN and CVV have to be masked in logs.
The others are: Pin block and Full Track data, those can never be stored in logs either but those come from swipe card Points of sale systems.
(Bin, Last-4, Expiration date okay; encrypted version of CVV okay)
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