Check the record behind the certificate
ISO Certificate Number Verification
A certificate number is the fastest starting point, but the number alone is not enough. Match the returned record to the organisation, site, standard, scope, issuing body, accreditation, and current status.
Practical comparison
Verification fields that matter
| Field | What to compare | Warning sign |
|---|---|---|
| Certificate number | Exact letters, digits, spaces, and suffixes | Number differs from the certificate image |
| Organisation | Legal name and certified site or address | Unrelated company or location |
| Standard and scope | Correct ISO standard and covered activities | Scope does not cover the claimed service |
| Status and dates | Active status and current validity | Expired, suspended, or withdrawn |
| Certification chain | Certification body and accreditation body | Issuer cannot be independently confirmed |
Step by step
How to verify by certificate number
- 1
Copy the complete certificate number from the source document.
- 2
Search the number exactly, then try the organisation name if no result appears.
- 3
Compare company, site, standard, scope, issue date, expiry, and status.
- 4
Confirm the certification body and accreditation relationship.
- 5
Save evidence of the check for procurement or vendor approval records.
Quality control
If the certificate is not found
- Recheck spacing, prefixes, suffixes, and transcription errors.
- Search the certified company name and trading-name variations.
- Ask the issuing certification body to confirm the record directly.
- Treat a missing result as a reason for further checks, not automatic proof of fraud.
Answers before action
Frequently Asked Questions
Can I verify an ISO certificate using only the number?
Often yes, but always compare the returned company, standard, scope, status, certification body, and dates with the document you received.
What do suspended and withdrawn mean?
Suspended normally means certification is temporarily not in good standing; withdrawn means it has been ended. Confirm the current record and issuer explanation.
Is every valid certificate visible in one database?
Not necessarily. Database coverage and confidentiality can vary. If no result appears, verify directly with the certification body and accreditation body.
Source reference: IAF CertSearch verification guide. Check the official source for current rules, fees, dates, and database coverage.
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