ISIN Validator
Validate securities ISINs — format, country prefix, and Luhn check digit.
Runs locally in your browser. Your input is not uploaded.
How to Use
- 1
Enter ISINs
One per line, 12 characters.
- 2
Read the verdicts
Format and expanded-Luhn check digit are verified.
- 3
See the parts
Country, NSIN, and check digit are broken out.
Frequently Asked Questions
- The 12-character International Securities Identification Number for stocks and bonds: a 2-letter country code, 9-character national identifier (NSIN), and a check digit — US0378331005 is Apple.
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