Credit Card Validator Services

The credit card is one of the most important things in the modern world. We can use the Credit card to buy games, shop on e-commerce websites or for even shopping in the offline market. Thanks to e-commerce websites, we don’t need to go to the offline market to buy important things. We can buy anything online using these credit cards. All these e-commerce websites like eBay and Amazon is accompanied by a card payment system. The main reason for using a card payment system is because of the security features it provides.

The best thing about a credit card is that you have to pay its bill on the month end. Thus, many people love using credit cards. If you are using a debit card then you must have enough cash in your bank account. This is not possible for most of the people because they receive their salary on month end. Thus, it is difficult to maintain your bank balance throughout the month. There are many more benefits of using credit cards which we will discuss later in this article. First, let’s understand the basic definition of a credit card.

What is Credit Card Validator?

A credit card basically allows you to borrow some money from your bank or issuer. You can use this money to make purchases. It doesn’t matter if you are buying a burger or an iPhone. As long as you have a good credit score and pay back the borrowed money within 20-30 days, you don’t have to pay any extra money. If you take more than a month to pay, then you’ll have to pay some interest also. This is how banks earn money.

Some of the benefits of using a credit card are:

1. A credit card is safer and convenient than carrying hard cash or using a debit card.
2. You can build a credit score and increase your chances of getting a loan from your bank in the future.
3. Most of the credit cards give you a lot of rewards if you use them. You will receive cash back on almost every purchase.

Thus, most people love using Credit cards. Some people might think that even PayPal is a good option. But, even your PayPal account is connected to your Credit card.

The Details about Credit Card Number Validator

First, we will discuss all the important details which are mentioned on your credit card. If you’ve just got a new credit card then it is very important for you to know all the basic details of credit cards. After knowing this information, you would be able to do online payments faster.

Credit card consists of many things which are important when you are doing a transaction online. The credit card number is not the only important thing on your card. There are many more things which you have to enter while doing a transaction. Thus, we have discussed in brief about all the important details.

Credit card number

A credit card number is the unique set of digits which is written on your card. It is mostly written on the front side of your card. It is typically 16-digits in length. If you are using an American Express card, then the card number will be 15-digits long. This is the second most important thing on your credit card after CVV.

Credit card numbers are not randomly generated. Each bank uses a special algorithm to generate these credit card numbers. Thus, two credit card numbers can never be the same. These credit card numbers are used to identify the issuer. Also, this helps in preventing thefts because it is not possible to guess anyone credit card number.

The first 6 digits of any credit card are used to identify the issuer or bank. This 6-digit code is also known as Bank Identification Number [BIN] number of your credit card. For example, Visa cards always begin with 4. Thus, you can easily identify if the card is issued by Visa or not.

Cardholder name

Cardholder name is written on the front side of your credit card. It is the name of the cardholder or the person who applied for the card. You must enter cardholder name in every transaction you do online.

Expiration date

Every credit card comes with an expiration date. This expiration date is a very important piece of information. It is used to validate your credit card transaction. You can find this date on your front side of your card. The expiration date consists of year and month only. Your credit card will stop working on the last date of the month mentioned. For example, if your card expiration date is “6/19” then it will expire on June 30, 2024. Thus, make sure you apply for a new credit card before the last day of the mentioned month.

Security Code or CVV

Security Code is definitely the most important thing on your card. It is also known as CVV and is used to validate all of your online and offline transactions. This code is written on the back side of your credit card. It mostly consists of a three-digit unique looking card. You must not share your CVV with anyone else unless you want them to use your card.

Personal Identification Number or PIN

The PIN number is used to validate your offline transactions. This number is not written on your credit card. You can also reset this number by contacting your provider or bank.

These were all the important details which are on your credit card. You may need to provide some more details during transaction like a Zip code. Most of the online merchants only require your credit card number and CVV code.

Now, we are going to discuss how to validate your credit card number.

How to Validate your Credit Card Number

Every credit card has a unique Credit card number. This credit card number is used to validate your transactions. There is no need to use any complex algorithm to check the validity of your credit card. You can easily check the validity of your card with a simple math calculation. First, you must understand how these card numbers are assigned.

As we have already discussed before, these card numbers are not randomly generated. Rather, they follow some similar looking algorithm.

The first 6 digits of your card number are known as Bank Identification Number (BIN). BIN number is used to identify the card’s issuer name. Some examples of BIN number are:

Visa: Visa credit card numbers always start with 4.

MasterCard: MasterCard credit card numbers always start with 51 or 55.

Discover: Discover credit card numbers always start with 6011,644 or 65.

American Express card: American Express credit card numbers always start with 34 or 37.

The 7th and the following digits are used to identify the cardholder’s account number. The final digit of your credit card number is known as the checksum. It is used to validate your credit card number using Luhn’s algorithm. Now, let’s talk about how to check the validity of your credit card number. There are four methods using which you can check the validity of your card number.

1. Luhn Algorithm

You can check whether your credit card number is valid or not using the Luhn algorithm. For example, suppose that the card number is: 4417 1234 5678 9113

Step 1: First, drop the last digit from your card number. This digit is known as the digit sum.

Original number: 4417 1234 5678 9113

Modified number: 4417 1234 5678 911

Step 2: Now reverse your credit card number.

Original number: 4417 1234 5678 911

Reversed number: 119 8765 4321 7144

Step 3: Now, multiply all the odd positions by 2. If the result is higher than 9, then subtract that number by 9.

Reversed number: 119 8765 4321 7144

Modified number: 219 8561 4321 5154

Step 4: Add all the digits of the modified number.

Add digits: 2 + 1 + 9 + 8 + 5 + 6 + 1 + 4 + 3 + 2 +1 + 5 + 1 + 5 +4 = 53.

Step 5: Now, use Sum%10 to find out the Modulo 10 of the sum. The result must be equal to the digit sum of your credit card number.

53 modulo 10 = 3 (last digit of your credit card number).

2. Major Industry Identifier (MII)

The first digit of your credit card is known as Major Industry Identifier. It is used to identify the major industry of the card issuer.

• 1, 2: If your card number starts with 1 or 2 then its major industry is Airlines.

• 3: If your card number starts with 3 then it is issued by American Express, JCB or Diner’s Club.

• 4: If your card number starts with 4 then it is issued by Visa or Electron.

• 5: If your card number starts with 5 then it is issued by MasterCard.

• 6: If your card number starts with 4 then it is issued by Discover Card and China UnionPay.

• 7: If your card number starts with 7 then its major industry is Petroleum.

• 8: If your card number starts with 8 then its major industry is Telecommunications

• 9: If your card number starts with 9 then its major industry is Natural Assignment

3. Issuer identifier number (IIN)

The first six digits of your card number are known as issuer identifier number (IIN). It is used to identify the credit card issuer. It is also known as Bank Identification Number (BIN). Some examples of BIN number are:

Visa: Visa credit card numbers always start with 4.

MasterCard: MasterCard credit card numbers always start with 51 or 55.

Discover: Discover credit card numbers always start with 644, 6011 or 605.

American Express card: American Express credit card numbers always start with 34 or 37.

4. Primary Account Number (PAN)

PAN or Primary Account Number is a 14 digit number which is used to identify the account holder’s name. As we have already discussed, the first digits of your credit card number are used to identify the issuer of your credit card. The following 14-16 digits are used to identify the customer’s account number.

How Mod 10 or Modulus 10 is performed on Validating a Valid Credit Card?

The Luhn algorithm is also known as the Modulus 10 algorithm. The Luhn algorithm was created by Hans Peter in 1954. It is a simple formula which is used to validate many identification numbers, such as IMEI number, credit card number and debit card number. Most of the online free credit card generators use this algorithm to generate fake credit card numbers.