Bulk VAT number lookup for large website lists
If you need a bulk VAT checker rather than looking up one company at a time, this is built for that. Paste or upload a list of websites and website2vat matches each domain against public business registries to find its VAT or company registration number — including EU VAT numbers in bulk, where a country code is returned alongside the registration data.
It is the same underlying tool as the website2vat homepage, just set up here for the bulk case: large lists, mixed formats, and a single downloadable result set at the end.
- Upload your listPaste text or upload a TXT, CSV, TSV, XLSX or Numbers file — up to 10,000 rows per list.
- We match each domainEvery website is resolved to its registrable domain, then checked against BuiltWith’s VAT lookup data.
- Export one CSVDownload a single file with one row per VAT or registration number found, ready for spreadsheets or a compliance system.
What you get
Built for volume
Handles up to 10,000 rows in one pass, batched automatically so large lists don’t time out.
EU coverage
Finds EU VAT numbers in bulk across member states, alongside non-EU registration identifiers where available.
Deduplicated output
Duplicate domains and blank rows are cleaned up before you ever see a result.
Frequently asked questions
How many websites can I check in one bulk VAT number lookup?
Up to 10,000 rows per list. The first 20 results are always free to preview before you unlock the rest.
Does the bulk checker cover VAT numbers outside the EU?
Yes — where a business has a public registration or tax identifier of any kind, it’s returned alongside the country it was found in.
What happens if a website doesn’t have a public VAT number?
It’s included in your results and marked as not found, so you can see coverage across the whole list rather than just the matches.