Free tool
GLN Validator
Check any GS1 Global Location Number. Validates format, check digit, and identifies the GS1 prefix allocation region.
What this tool checks
Checks
- ✓ 13-digit format (strips spaces and hyphens)
- ✓ All-numeric characters
- ✓ GS1 mod-10 check digit
- ✓ GS1 prefix allocation (indicates where the number was assigned, not where the entity is located)
Does not check
- ✗ Whether the GLN is registered in a GS1 database
- ✗ Whether the entity/location still exists
- ✗ GEPIR lookup
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Glossary
What is a GLN? Global Location Numbers for Product Data and EDI
A complete explanation of Global Location Numbers (GLNs): what they identify, their format, check digit calculation, and where they appear in product data and EDI transactions.
Comparison
GLN vs GTIN: Understanding GS1 Identifier Types
A clear comparison of GLN and GTIN identifiers: what each identifies, their formats, where they appear, and how they work together in product data and supply chain operations.