Is ATU51507409 valid?

Yes: ATU51507409 returned valid:true from VIES at the time of this check and resolved to UniCredit Bank Austria AG.

What does UID stand for?

UID is short for Umsatzsteuer-Identifikationsnummer (Umsatzsteuer). It is the local name for Austria's VAT identification number.

vatverify queries VIES directly for every validation. Valid responses are cached for 30 days; invalid responses are cached for 24 hours. The "Re-check now" button bypasses the cache and forces a fresh registry call.

Can I integrate this in my own code?

Yes. POST /v1/validate with {"vat_number":"ATU51507409"} and an Authorization Bearer header. Free plan: 500 validations per month, no credit card.

ATU51507409

UniCredit Bank Austria AG

AustriaVerified against VIES

Valid at query time

Last verified 3 d agocached835 ms019dd537-418…Live status →

Validation result

VAT number: ATU51507409
Company: UniCredit Bank Austria AG
Address: Rothschildplatz 1 AT-1020 Wien
Country: Austria
Registry: VIES
VAT format: ATU + 8 digits
Local name: UID — Umsatzsteuer

Reproduce this check

curl -X POST "https://api.vatverify.dev/v1/validate" \  -H "Authorization: Bearer $VATVERIFY_KEY" \  -H "Content-Type: application/json" \  -d '{"vat_number":"ATU51507409"}'

Raw API response

{
  "data": {
    "valid": true,
    "vat_number": "ATU51507409",
    "country": {
      "code": "AT",
      "name": "Austria",
      "vat": {
        "name": "Umsatzsteuer",
        "abbreviation": "USt",
        "currency": "EUR",
        "standard_rate": 20,
        "reduced_rates": [
          10,
          13
        ],
        "super_reduced_rate": null,
        "parking_rate": 13,
        "number_format": "AT + U + 8 digits",
        "number_pattern": "^ATU\\d{8}$",
        "updated_at": "2026-04-01"
      }
    },
    "company": {
      "name": "UniCredit Bank Austria AG",
      "address": "Rothschildplatz 1\nAT-1020 Wien"
    },
    "verify_id": null,
    "verified_at": "2026-04-25T10:23:57.172Z"
  },
  "meta": {
    "request_id": "019dd537-418c-7405-92f9-d16e1d954a90",
    "latency_ms": 530,
    "cached": true,
    "source": "vies",
    "source_status": "cached",
    "cached_at": "2026-04-25T10:23:57.172Z",
    "stale_seconds": 286024
  }
}

More from Austria

All Austria VAT details

Frequently asked

Is ATU51507409 valid?: Yes: ATU51507409 returned valid:true from VIES at the time of this check and resolved to UniCredit Bank Austria AG.
What does UID stand for?: UID is short for Umsatzsteuer-Identifikationsnummer (Umsatzsteuer). It is the local name for Austria's VAT identification number.
How is this checked?: vatverify queries VIES directly for every validation. Valid responses are cached for 30 days; invalid responses are cached for 24 hours. The "Re-check now" button bypasses the cache and forces a fresh registry call.
Can I integrate this in my own code?: Yes. POST /v1/validate with {"vat_number":"ATU51507409"} and an Authorization Bearer header. Free plan: 500 validations per month, no credit card.

This validation is stored 30 days for audit reference — request id 019dd537-418….

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