Discover Card Validator & Generator
The ultimate testing utility for developers. Instantly validate Discover card numbers using the Luhn algorithm or generate valid test sequences for your payment gateway integration.
Card Validator
Checksum & Format Verification
Network
Discover
Luhn Check
-
Instant Check
Real-time Luhn algorithm validation for all Discover card sequences.
Safe & Secure
Client-side processing. Your data never leaves your browser.
Card Generator
Generate Valid Test Numbers
Card Holder
TEST USER
Expires
12/28
Discover Network IIN Ranges
| Prefix Range | Length | Region |
|---|---|---|
| 6011 | 16 Digits | Global |
| 622126 - 622925 | 16-19 Digits | UnionPay Dual |
| 644 - 649 | 16 Digits | Global |
| 65 | 16 Digits | Global |
What is the Luhn Algorithm?
The Luhn algorithm, also known as the "modulus 10" algorithm, is a simple checksum formula used to validate a variety of identification numbers, such as credit card numbers, IMEI numbers, and more. It was designed to protect against accidental errors, not malicious attacks.
Developer Integration
Use our generated Discover card numbers to test your e-commerce platform's payment flow. Our generator creates valid sequences that pass both Luhn and network-specific IIN checks, perfect for staging and development environments.
Compliance & Privacy
This tool is for educational and development purposes only. We do not store any card numbers entered or generated. The numbers generated are mathematically valid but do not represent actual financial accounts.