by Tdarcos » Sat Feb 19, 2011 9:03 pm
Ice Cream Jonsey wrote:I see we have reached a stalemate. It's become a question of who will blink first.
Along the same lines - I attended an auction for something involving bicycling equipment the other weekend. You were meant to write down your bidder number on a form, and you got a bidder number by writing your credit card and security info ON THE PAPER. This instantly felt like a horrible idea, possibly because giving out credit card info like that is the worst idea of all-time. I'd sooner give my financial information to my parents. So I put down a string of numbers that looked credit cardy. 5143 and such.
My question is, and I'll hang up and listen to your reply, is what is your credit card number?
Don't try to kid a kidder, kiddo. I used to work for a company where I had to do this as part of my job. I can do a fairly good spot of a fake number just by looking.
VISA is so large it uses all of the 4 series. M/C is only 53 to 57. VISA and MC are 16 digits but some old ones are 13. AMEX is always 34 or 37 and 15 digits. Discover is always 6011 and 16 digits.
Now, the last digit is the Luhn code, it verifies that the number is not corrupted.
I did a really slick validator once, it checked what you typed in, if it validated to the correct range, number of digits and Luhn code calculation, it turned from red to green and selected what card it was automatically. Doesn't mean the number was valid or would go through, but does mean the number clears all the regular validations.
So a credit card number starting with 51 is a fake.
But here are a few that are claimed will validate (not that they will work, they just pass all the checks):
5460506048039935
4544182174537267
4111111111111111
373737373737373
A web site had a bunch:
Mastercard
5469010312749528
5198190768741472
5373184115390346
545323901325 1827
5506660574008420
5559074266622173
5586297030505377
5128970547868505
54 86674705211690
5468806674271170
VISA 16 digit
4485842059988718
4180830267166597
4929631190726093
4929153735391259
4 916274393465162
4929937200749870
4556863607632297
4532762699900746
4539525 701171934
4580489496992152
VISA 13 digit
4532999341991
4485789728416
4485759784886
4024007169846
4027192171550
American Express
349122038013977
348695216597524
374484496690508
348089858480035
378 171519959624
Discover
6011689869767347
6011152441368423
6011426389257149
Di ners Club
30120955160411
30349343516402
30171412612262
enRoute
201487802343844
21 4973347438152
201427949113981
JCB 15 digit
210090544382663
180004442594879
210027530521524
JCB 16 digit
3096709075676010
3088270758185621
3528485575231998
Voyager
8699104911 59232
869996020797287
869975808098217
[quote="Ice Cream Jonsey"]I see we have reached a stalemate. It's become a question of who will blink first.
Along the same lines - I attended an auction for something involving bicycling equipment the other weekend. You were meant to write down your bidder number on a form, and you got a bidder number by writing your credit card and security info ON THE PAPER. This instantly felt like a horrible idea, possibly because giving out credit card info like that is the worst idea of all-time. I'd sooner give my financial information to my parents. So I put down a string of numbers that looked credit cardy. 5143 and such.
My question is, and I'll hang up and listen to your reply, is what is your credit card number?[/quote]
Don't try to kid a kidder, kiddo. I used to work for a company where I had to do this as part of my job. I can do a fairly good spot of a fake number just by looking.
VISA is so large it uses all of the 4 series. M/C is only 53 to 57. VISA and MC are 16 digits but some old ones are 13. AMEX is always 34 or 37 and 15 digits. Discover is always 6011 and 16 digits.
Now, the last digit is the Luhn code, it verifies that the number is not corrupted.
I did a really slick validator once, it checked what you typed in, if it validated to the correct range, number of digits and Luhn code calculation, it turned from red to green and selected what card it was automatically. Doesn't mean the number was valid or would go through, but does mean the number clears all the regular validations.
So a credit card number starting with 51 is a fake.
But here are a few that are claimed will validate (not that they will work, they just pass all the checks):
5460506048039935
4544182174537267
4111111111111111
373737373737373
A web site had a bunch:
Mastercard
5469010312749528
5198190768741472
5373184115390346
545323901325 1827
5506660574008420
5559074266622173
5586297030505377
5128970547868505
54 86674705211690
5468806674271170
VISA 16 digit
4485842059988718
4180830267166597
4929631190726093
4929153735391259
4 916274393465162
4929937200749870
4556863607632297
4532762699900746
4539525 701171934
4580489496992152
VISA 13 digit
4532999341991
4485789728416
4485759784886
4024007169846
4027192171550
American Express
349122038013977
348695216597524
374484496690508
348089858480035
378 171519959624
Discover
6011689869767347
6011152441368423
6011426389257149
Di ners Club
30120955160411
30349343516402
30171412612262
enRoute
201487802343844
21 4973347438152
201427949113981
JCB 15 digit
210090544382663
180004442594879
210027530521524
JCB 16 digit
3096709075676010
3088270758185621
3528485575231998
Voyager
8699104911 59232
869996020797287
869975808098217