A valid credit card number has several fields and each of them has a meaning. For the technically inclined, this number complies to the ISO 7812 numbering standard. An contains a six-digit issuer identification number (IIN), an individual account identification number, and a single digit checksum.
The credit card numbers you generate on this page are completely random. When we say they are valid, we merely imply that they are a possible combination of characters which will validate when passed through the MOD 10 algorithm. You can also generate valid credit card numbers for specific Issuing Networks by utilising their particular prefixes. However, we do not provide you (obviously) with the correspondent verification code for these cards, as they are completely fake and made up randomly.
If you've ever found yourself trying to try a product online which required a credit card, even when you just want to take a look, you know why we made this. We believe there's no need to share such information with providers without the actual intent to buy stuff. Anyone can make a website with a form and require you to insert valuable and sensitive information which requires you to give up your privacy. This is a way to protect yourself in such situations.
The other reason we made this are programmers testing ecommerce websites, applications or other software. They usually need lots of fake data, and this is a very easy way to generate a bunch of valid credit card numbers in a split second. There's another tool for those times when you need to generate all other kinds of data.
Credit Card Validation - Check Digits. This document outlines procedures and algorithms for Verifying the accuracy and validity of credit card numbers. Most credit card numbers are encoded with a "Check Digit". A check digit is a digit added to a number (either at the end or the beginning) that validates the authenticity of the number. A simple algorithm is applied to the other digits of the number which yields the check digit.web.eecs.umich.edu
Fortunately, credit card numbers are created in a way that allows for some basic verification. This verification does not tell you if funds are available in the account and it certainly doesn't tell whether or not the person submitting the order is committing credit card fraud.Finally, you add both totals together and if the result is evenly divisible by 10, then the card has passed validation. Of course, this would be clearer with a bit of code and Listing 1 shows my IsCardNumberValid method. Listing 1: Validating a credit card.www.blackbeltcoder.com
A ruby gem for validating credit card numbers, generating ones, luhn checks.Gem adds validator to check whether or not a given number actually falls within the ranges of possible numbers prior to performing such verification, and, as such, CreditCardValidations simply verifies that the credit card number provided is well-formed.github.com