CreditCardValidator
Mastercard Credit Cards — Itau Unibanco S/A - IIN 525320
Credit card numbers that start with the Issuer Identification Number (IIN) 525320 are Mastercard credit cards issued by Itau Unibanco S/A in Brazil. Note that this is the only IIN range issued by Itau Unibanco S/A, so all cards issued by this provider will be of the format 5253 20XX XXXX XXXX. For more information, call Itau Unibanco S/A at +55 11 3003 3030.
| Card Scheme | Mastercard |
|---|---|
| Bank Name | Itau Unibanco S/A |
| Card Brand | ELECTRON |
| Card Type | CREDIT |
| IIN | 525320 |
| Card Number | 5253 20XX XXXX XXXX |
| Bank Phone | +55 11 3003 3030 |
| Bank City | Sao Paulo |
| Bank Country |
Brazil
|
Anatomy of an Itau Unibanco S/A Mastercard Credit Card Number
While credit card number may seem like a random string of digits, they actually contain a large amount of valuable data about the card that can be used for validation and verification purposes.
Digit 1 — The MIIThe first digit of the card is known as the MII digit, and indicates the credit card's scheme. In this case, the MII of 5 indicates that this is a Mastercard card.
Digits 1-6 — The IIN / BINThe first six digits of the card number, inclusive of the MII, are called the IIN (Issuer Identification Number) or BIN (Bank Identification Number). This sequence uniquely identifies the bank that issued the card. In this case, the IIN of 525320 indicates that this card was issued by Itau Unibanco S/A in Brazil.
Digits 7-15 — The Account NumberDigits 7-15 of the credit card number contain the Primary Account Number, or PAN, issued by the bank to uniquely identify the account holder. These 8 digits are the most important part of the credit card number.
Digit 16 — The Check DigitThe last digit of the card number (the 16th digit in most cases) is the check digit, which is calculated by applying a mathematical formula called the Luhn algorithm to the preceding portions of the account number. While not actually part of the account number itself, the check digit is essential to allow easy validation of card numbers and detection of typos, missed digits, etc.