Examples: 61.262.495/0001-11 (BR CNPJ) · 12-3456789 (US EIN) · 51824753556 (AU ABN) · 91350100M000100Y43 (CN USCC)
Quick test:
Supported Countries & Formats
| Country | ID Type | Format | Check Digit | Official Lookup |
|---|
FAQ
Does validation mean the ID is real?
No. Format and check-digit validation only confirms the number is mathematically correct. It does not verify that the ID exists in the official registry. Use the official lookup links for verification.
Is my data sent to a server?
No. All validation runs locally in your browser. No ID numbers are transmitted or stored.
Can I validate multiple IDs at once?
Currently this tool validates one ID at a time. Each ID is validated against the auto-detected or manually selected country format.