Bank card number identification

If you are doing online business I am sure you have researched a a certain customer that looks questionable. One trick I learned is to put their email in Facebook and see if they have a profile. If not, then most likely it’s a fake or new email used for fraud. If this isn’t enough then try to call the number they gave when signing up. If they are out of the country this can be double tricky for the first to. Another trick is to check the card type:

0 – ISO/TC 68 and other future industry assignments
1 – Airlines
2 – Airlines and other future industry assignments
3 – Travel and entertainment and banking/financial
4 – Banking and financial
5 – Banking and financial
6 – Merchandising and banking/financial
7 – Petroleum and other future industry assignments
8 – Healthcare, telecommunications and other future industry assignments
9 – National assignment

If it’s not a bank card, that should be cause for concern.

Next is to check the type:

The first six digits of a card number (including the initial MII digit) are known as the issuer identification number (IIN). These identify the institution that issued the card to the card holder.

If the type does not match the country that is cause for concern.

Issuing networkIIN rangesActiveLengthValidation
American Express34, 37Yes15Luhn algorithm
Bankcard5610, 560221-560225No16Luhn algorithm
China UnionPay62 or 88Yes16-19no validation
Diners Club Carte Blanche300-305Yes14Luhn algorithm
Diners Club enRoute2014, 2149No15no validation
Diners Club International300-305, 309, 36, 38-39[9]Yes14Luhn algorithm
Diners Club United States & Canada54, 55Yes16Luhn algorithm
Discover Card6011, 622126-622925, 644-649, 65Yes16Luhn algorithm
InterPaymentTM636Yes16-19Luhn algorithm
InstaPayment637-639Yes16Luhn algorithm
JCB3528-3589Yes16Luhn algorithm
Laser6304, 6706, 6771, 6709Yes16-19Luhn algorithm
Maestro5018, 5020, 5038, 5612, 5893, 6304, 6759, 6761, 6762, 6763, 0604, 6390Yes12-19Luhn algorithm
Dankort5019Yes16Luhn algorithm
MasterCard50-55Yes16Luhn algorithm
Solo6334, 6767No16, 18, 19Luhn algorithm
Switch4903, 4905, 4911, 4936, 564182, 633110, 6333, 6759No16, 18, 19Luhn algorithm
Visa4Yes13, 16Luhn algorithm
Visa Electron4026, 417500, 4405, 4508, 4844, 4913, 4917Yes16Luhn algorithm

Charles Y.

Charles has been working as a webmaster since 1998. Since then, he has had his hands in thousands of websites and has helped millions get online through a company he partially owns called Web Host Pro.

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