---
title: "Duo Data Utilities: IBAN, ISIN, VAT & Tax ID, Barcode, Timezone, Geo APIs"
account: duoleads
slug: duo-data-utilities-iban-isin-vat-tax-id-barcode-timezone-geo
---

# Duo Data Utilities: IBAN, ISIN, VAT & Tax ID, Barcode, Timezone, Geo APIs

Data utilities: validate IBANs, ISINs, VAT numbers and barcodes, convert time zones, and compute geodesic distances

- Operations: 33
- Versions: 1 (latest `18790d59615e`)
- License: [Output licence: Terms of Service clause 5](https://api.duoleads.com/terms)
- Source: https://api.duoleads.com/openapi.json
- OpenAPI document: https://skmtc.dev/duoleads/apis/duo-data-utilities-iban-isin-vat-tax-id-barcode-timezone-geo/revisions/18790d59615e?raw

## Operations

33 in total, by tag:

- deterministic (30)
- no-api-key (3)

Every operation, with a link to its markdown: https://skmtc.dev/duoleads/apis/duo-data-utilities-iban-isin-vat-tax-id-barcode-timezone-geo/llms.txt