In addition to verifying your credit card number, you will need to verify the date of birth you provided when you created your Yahoo! account. In case you are not sure if you have used your credit card with Yahoo!, please select the “I have never used a credit card with Yahoo!” option.

You should always ensure that you are on a legitimate Yahoo! site before entering any personal information, including your credit card number.

Click here for help on whether you can use your credit card number to verify your identity.