*All random cards generated are structurally valid but have no actual balance and cannot be used for online payments or real transactions. Any attempt to use these test card numbers for actual purchases is strictly prohibited and illegal. For more details, visit our Terms of Service.
Test cards
| Card number | Network | Type | CVV | Expiry | Test token |
|---|---|---|---|---|---|
| 4242 4242 4242 4242 | Visa | Credit | Any 3 digits | Any future date | tok_test_visa_4242 |
| 4012 8888 8888 1881 | Visa | Credit | Any 3 digits | Any future date | tok_test_visa_1881 |
| 5555 5555 5555 4444 | Mastercard | Credit | Any 3 digits | Any future date | tok_test_mastercard_4444 |
| 5105 1051 0510 5100 | Mastercard | Credit | Any 3 digits | Any future date | tok_test_mastercard_5100 |
| 3782 822463 10005 | American Express | Credit | Any 3 or 4 digits | Any future date | tok_test_amex_0005 |
| 3714 496353 98431 | American Express | Credit | Any 3 or 4 digits | Any future date | tok_test_amex_8431 |
| 3707 810000 00007 | American Express | Credit | Any 3 or 4 digits | Any future date | tok_test_amex_0006 |
| 4915 6693 5323 7603 | Visa | Debit | Any 3 digits | Any future date | tok_test_banorte_debit |
| 5576 0413 8540 2646 | Mastercard | Debit | Any 3 digits | Any future date | tok_test_banco_azteca_debit |
Source: official Conekta documentation, checked on 2026-09-18
Simulate a declined payment
Each of these credit card numbers returns the listed error code in test mode.
| Code | Card number | Notes |
|---|---|---|
| insufficient_funds | 4000 0000 0000 0127 | — |
| card_declined | 4000 0000 0000 0002 | — |
| invalid_cvc | 4000 0000 0000 0085 | — |
| stolen_card | 4000 0000 0000 9979 | — |
| card_over_limit | 4765 8894 0483 3223 | — |
| suspicious_behaviour | 4000 0000 0000 4954 | — |
| blocked_payment_source | 4000 0000 0000 9235 | — |
| attempts_over_limit | 5201 1695 9880 6528 | — |
| amount_over_limit | 5579 2344 3346 7094 | — |
| invalid_expiration_date | 4765 8814 8776 4268 | — |
| call_issuer | 4134 0673 5273 6334 | — |
| expired_card | — | Use any valid test card with a past expiry date, e.g. 03/20 |
| invalid_expiry_month | — | Use an invalid expiry month, e.g. 14 |
Source: official Conekta documentation, checked on 2026-09-18
- A card tokenized in test mode must be charged within 10 minutes; after that the API returns a "card data capture expired" error.
- These numbers only work in the provider's test mode. They have no balance and are rejected in production.
- Providers change their sandbox cards from time to time. If a number stops working, check the linked documentation.
- Need numbers for a specific BIN instead? Use the test card generator.