Namso Gen
Supercharge your testing workflow with valid credit card numbers
Free2,017 impressions#17 of its week
Namso Gen creates Luhn-valid credit-card numbers for testing payment forms and integrations.
- for
- Developers, QA engineers, and e-commerce teams testing payment workflows.
- pricing
- free
Key features
- Custom BIN or pattern — Generate numbers using a specific BIN prefix or pattern with placeholders.
- Bulk generation up to 2000 — Create up to 2,000 valid card numbers in a single run.
- Luhn checksum validation — Ensures every generated number passes the Luhn algorithm.
- Optional CVV and expiration — Add random or chosen CVV and expiry dates to each output.
- Browser-local history — Saved BINs and results are stored locally and can be cleared anytime.
- Export formats — Download results as CSV, SQL, JSON, XML, or plain text.
Use cases
- Validate form input masks and client-side card number formatting.
- Feed mock card data into automated test suites (Postman, Selenium, Cypress).
- Generate bulk test fixtures for QA of e-commerce checkout flows.
Namso Gen FAQ
Is Namso Gen legal to use?+
It is legal when used for authorized testing on systems you own or have permission to test; never use it for real purchases.
Can the generated numbers be used for live payments?+
No, the numbers only have correct structure and Luhn checksum; they are not linked to real accounts and must not be submitted to live gateways.
Does the tool store generated card numbers?+
Numbers are stored only in the browser’s localStorage for history and are not uploaded to Namso’s servers.
Do I need to sign up to use Namso Gen?+
No account, login, or email is required; the tool works instantly in the browser.
Can I use the output with automated testing tools?+
Yes, the generated data can be fed into Postman, Selenium, Cypress, JMeter, or any custom script for structural testing.
What limits apply to generation?+
Up to 2,000 results per run; advanced mode enumerates all Luhn-valid combos for up to four placeholders.
Summarized by DevHunt from namso.io · Oct 1, 2026. Details may change; check the official site.
