Namso Gen is a free online generator for credit card numbers with CVV and MM/YYYY for testing and development. Our Payment System Test Number Generator uses the industry-standard Luhn Algorithm (MOD 10) to create numbers that pass standard verification checks while remaining non-functional for real transactions.

What are the key parameters?

The key parameters include: 1) Bank Identification Number (BIN) - The first 6 to 8 digits of a card number that represent the issuing bank or financial institution. 2) Expiration Date (MM/YYYY) - The standard format expiration date. 3) Card Verification Value Code (CVV) - A 3 or 4-digit security number. 4) Quantity - Default is 10 cards per request, customizable based on needs.

How to generate credit cards?

1. Enter a valid 6-8 digit BIN 2. Optionally set the Expiration Date and CVV parameters 3. Choose quantity of cards 4. Click the 'Generate' button

What are the main features?

Namso Gen features include: 1) Support for all major credit cards (Visa, Mastercard, American Express) 2) BIN-based generation 3) Multiple test case generation 4) Luhn Algorithm validation ensuring all generated numbers pass standard verification checks

What are the common use cases?

Namso Gen is primarily used in development and testing of payment processing systems, quality assurance, and compliance testing. It's particularly useful for web developers testing payment systems and for compliance testing in finance, e-commerce, payment gateways, and fraud detection systems.

Is this legal to use?

All random credit cards generated by Namso Gen are structurally valid but do not hold any actual balance and cannot be used for online payments and real transactions. Any attempt to use these generated card numbers for actual purchases is strictly prohibited and illegal. Namso Gen complies with international data protection laws and does not collect or hold any personal information.

A secure testing tool for payment system developers and QA professionals. All test numbers are non-functional and strictly for development environments.

BIN Checker

Enter the first 6–8 digits of a card number to identify the card network and the expected number length. The check runs in your browser using the official IIN prefix ranges.

BIN / IIN (6–8 digits)

What is a BIN?

A BIN (Bank Identification Number) — now officially called an IIN (Issuer Identification Number) — is the first 6 to 8 digits of a payment card. It identifies the card network and the institution that issued the card. The rest of the number identifies the individual account, and the final digit is a Luhn check digit.

This checker classifies the network from the published IIN ranges. It does not perform a bank lookup: issuer names and countries require a licensed BIN database, which changes constantly. You can still generate structurally valid test numbers from any BIN with the card generator.

Card network ranges

Network	Prefix / range	Length
Visa	4	13, 16, 19
Mastercard	51–55, 2221–2720	16
American Express	34, 37	15
Discover	6011, 65, 644–649, 622126–622925	16, 19
JCB	3528–3589	16–19
Diners Club	300–305, 3095, 36, 38–39	14–19
UnionPay	62	16–19

Note the overlap: 622126–622925 can be Discover or UnionPay depending on the BIN. When ranges overlap by design, only the card database of the network itself can give a definitive answer.

FAQ

Can I look up the bank that owns a BIN here?: No. Issuer names and countries require a licensed BIN database. This tool only classifies the network from published prefix ranges.
How many digits should I enter?: 6 digits is the classic BIN length. 7- and 8-digit BINs are increasingly common and give a more precise classification.
Does a valid BIN mean the card is real?: No. A BIN only tells you the network and possibly the issuer range. It says nothing about whether an account exists or has funds.

Popular test BINs

424242 — Visa (Stripe test BIN)
555555 — Mastercard (Stripe test BIN)
378282 — American Express (Stripe test BIN)
601111 — Discover (Stripe test BIN)
411111 — Visa (universal test BIN)

BIN Checker

What is a BIN?

Card network ranges

FAQ

Popular test BINs

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