Works good because you don't have to charge the card to see if valid. First go to
Available for users only
Then choose any product, checkout
Next paste the cvv2 real info and wrong billing, if it says Unable to authorize payment
The transaction resulted in an AVS mismatch. The address provided does not match billing address of cardholder. means ccv is valid
If invalid cvv2 it will say Unable to authorize payment
This transaction has been declined.
Also you can visit
Available for users only
Right card info and wrong billing
"AVS mismatch error"
