Purpose of Fake Credit Card Numbers
Fake credit card numbers are most commonly used by developers to test their payment gateway and ensure that it is functioning properly. By using random credit card numbers for each card type (Visa, MasterCard, Amex, etc.), you can test your payment checkout and ensure that your application works as intended.
If you're an E-Commerce owner or manage an app that requires payments, you can use these test credit card numbers along with a random CVV and any future expiration date to test your payment system.
These dummy card numbers ARE NOT REAL and will never work for real transactions.