Números de cartão de crédito para teste

These are NOT real credit cards. They're randomly generated numbers that pass the Luhn checksum used to catch typos in card numbers — the same kind of dummy number every payment gateway (Stripe, PayPal, Braintree, etc.) publishes for sandbox testing. They have no connection to any real account and cannot be used to buy anything on a live payment system. Use only in test/sandbox environments.