
Discover card numbers can start with a variety of numbers, but most start with a 6, indicating a regular Discover card. These numbers are usually 16 digits long and follow a specific pattern.
The first digit of a Discover card number is always 6011, 622126-622925, 644-649, or 65. This is a key identifier that sets it apart from other types of credit cards.
Regular Discover cards start with a 6, while business Discover cards start with a 6011. This is a subtle difference, but it can be important for certain transactions or applications.
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Discover Card Numbers
Discover card numbers start with the Issuer Identification Number (IIN), also known as the Bank Identification Number (BIN). This number is unique to the bank that issued the card and is the first six digits of the card number.
The IIN for Discover cards ranges from 601100 to 659524, with some ranges having multiple IINs. For example, the IIN 601100 is used for credit cards issued in the United States, while the IIN 601140 is used for debit cards issued by Discover Card in the United States.
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The first digit of the card number, also known as the MII digit, indicates the credit card's scheme. In the case of Discover cards, the MII digit is 6, which indicates that it is a Discover card.
Here are some of the IIN ranges used by Discover for credit and debit cards:
The first six digits of the card number, including the IIN, uniquely identify the bank that issued the card. The remaining digits of the card number contain the Primary Account Number (PAN), which is the most important part of the credit card number.
Industry Identification
Discover card numbers start with a specific digit that reveals the card's industry affiliation. This digit is called the Major Industry Identifier (MII).
The MII is the first digit of the card number, and it shows the card's industry affiliation. For example, an airline credit card number will start with a one, while a Visa bank card will start with a four.
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Some common MIIs include:
- Airlines: 1
- Airlines & financial: 1
- Travel & entertainment: 1
- Banking & financial (Visa): 4
- Banking & financial (MasterCard): 5
However, Discover card numbers start with a different MII. According to the Discover Issued Credit Card IIN List, Discover card numbers start with the IIN 601100, 601110, 601120, and so on.
In fact, Discover issues credit and debit cards in the United States under a total of eighteen different IINs. Each IIN is unique and identifies the bank that issued the card.
Here is a list of some common Discover IINs:
As you can see, Discover card numbers start with a unique IIN that identifies the bank that issued the card. This is an important piece of information for card validation and verification purposes.
Types of Cards
Discover card numbers start with a specific pattern that can give you clues about the type of card. Discover issues credit cards in the United States under 18 different Issuer Identification Numbers, or IINs.
Discover credit cards have a specific format, which is 6011 00XX XXXX XXXX. This format indicates that the card is a credit card issued in the United States.
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The IIN makes up the first six digits of all credit or debit cards issued by Discover, followed by the primary account number (PAN) and a check digit. This is a standard format for credit cards issued by Discover.
Here are some examples of Discover credit card numbers and their formats:
These examples show that all the credit cards issued by Discover in the United States have the same format, which starts with 6011.
Frequently Asked Questions
What are the first 4 digits of a credit card?
The first 4 digits of a credit card are known as the Major Industry Identifier (MII) and indicate the card network, such as Visa, Mastercard, or American Express. They can be identified by specific numbers, like 4 for Visa or 34 for American Express.
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