A virtual credit card is a unique, temporary card number that's linked to an existing credit card account. It functions like a regular credit card for online or phone purchases but doesn't have a ...

The numbers on a credit card help identify the credit card network, the company that issued the card and the cardholder. Credit card numbers are either 15 or 16 digits, with each digit having its own ...

Citi has posted a notice that its virtual account numbers will be changing on August 24, 2025. Virtual numbers created before that date will no longer work. If you aren’t familiar with virtual credit ...

A credit card authorization key is a secure code used to process transactions, confirming purchases and preventing fraud ...