
4417 1234 5678 9113
4 - the first digit is the Major Industry Identifier.It designates the category of the entity which issued the card.
1 and 2 are airlines
3 is Travel and Entertainment
4 and 5 are Banking and Financial
6 is Merchandizing and Banking
7 is Petroleum
8 is Telecommunications
9 is National assignment
The first 6 digits are the Issuer Identification Number. It will indentify the institution that issued the card.
Visa: 4xxxxx
Mastercard: 51xxxx - 55xxxx
Discover:6011xx, 644xxx, 65xxxx
Amex: 34xxxx, 37xxxx
Cards can be looked up by their...