Free · Private · 95+ countries

United States SSN, EIN and ITIN validator

Type or paste a number from United States: we detect the document type, check its format and check digit and show the data it contains. Everything happens in your browser.

Spaces, dots and dashes are fine. It is checked as you type.

Everything runs in your browser: no number is sent or stored. It clears itself after 5 minutes of inactivity.

United States documents you can validate

SSN

Social security

Format only

Social security number. It has no public check digit: length, characters and embedded data are verified.

Example: 123456789

EIN

Business

Format only

Business identification number. It has no public check digit: length, characters and embedded data are verified.

Example: 123456789

ITIN

Tax ID

Format only

Tax identification number. It has no public check digit: length, characters and embedded data are verified.

Example: 912701234

Passport · MRZ

Passport numbers and the MRZ (the lines with “<” on the data page) follow the international ICAO 9303 standard: all their check digits are verified.

Examples are sample numbers with a correct check digit; they do not belong to real people or companies.

More than a validator

Built for teams that onboard customers from any country: fast, accurate and safe for personal data.

Private by design

Calculations happen on your device. No uploads, no history, no own cookies and automatic clearing.

Smart

Detects the document type, tells you what is wrong, suggests the right check character and extracts date of birth and sex when the number contains them.

Worldwide

Official algorithms for 95+ countries and passports for all 249 countries and territories. Country names in your language.

MRZ reader

Paste the machine readable zone of a passport or ID card and verify every check digit and the expiry date.

Bulk validation

Up to 1,000 numbers at once with CSV export protected against formula injection.

Instant

Results as you type, on mobile or desktop, with no sign-up and no limits.

Frequently asked questions

How do I validate a United States SSN?

Leave “Detect automatically” on or choose the document, type or paste the number and you will instantly see whether the format and check digit are correct. Spaces, dots and dashes are fine.

Which United States documents can I check?

SSN, EIN and ITIN, plus the passport number and the MRZ of passports and ID cards (ICAO 9303 standard).

Does a valid result mean the document exists?

No. The tool checks the published structure and check digits. It does not query official registers in United States, so it cannot confirm that a document exists, is current or belongs to a specific person.

Are the numbers I enter stored or sent anywhere?

No. Every calculation runs in your browser. No number is sent to Viliera or third parties and no history is kept.

Can I validate many numbers at once?

Yes. In “Bulk validation” paste up to 1,000 United States numbers, one per line, and download the result as CSV.

Validators for other countries

Each page explains the country's documents, their format and an example. For the rest of the world, use the passport or MRZ check.

Europe

See all countries →

Need this validation on your website or system?

We integrate document checks into forms, online shops and customer onboarding.

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