How to find and check a Peppol ID
To send an invoice over Peppol you need your customer's Peppol ID. Most of the time you can work it out from a number you already have. Here is how to find and check it.
What does a Peppol ID look like?
A Peppol ID has two parts separated by a colon: a four-digit code that says what kind of number it is (the scheme), followed by the number itself. For example 0208:0123456789. For how the network works, read What is Peppol?
Belgian businesses: 0208 and the enterprise number
Belgian businesses are almost always on Peppol under code 0208, followed by their ten-digit enterprise number, without dots and without a country code.
- VAT number BE0123.456.789 belongs to enterprise number 0123456789.
- The Peppol ID is then 0208:0123456789.
If you only know the company name, look up the enterprise number in the public search of the Crossroads Bank for Enterprises (CBE Public Search). Some businesses can also be reached under code 9925 with their VAT number (9925:BE0123456789), but 0208 is the usual one in Belgium.
Dutch businesses: 0106 or 9944
In the Netherlands you mostly see two variants:
| Code | Number | Example |
|---|---|---|
| 0106 | KvK (Chamber of Commerce) number, 8 digits | 0106:12345678 |
| 9944 | VAT identification number | 9944:NL123456789B01 |
| 0190 | OIN, mainly used by government bodies | 0190:00000001234567890000 |
A Dutch business chooses which number it registers under. If you're not sure, check the Peppol Directory or ask your customer.
Searching the Peppol Directory
The Peppol Directory at directory.peppol.eu is OpenPeppol's public search engine. You can search by company name or number and see which Peppol ID a business uses and which documents it can receive (for example invoices and credit notes in Peppol BIS Billing 3.0).
Note: being listed in the Directory is optional. A business you can't find there may still be reachable. The real check happens when you send: the access point then looks up in the central address register (SML and SMP) whether the ID exists and accepts that document type.
What if your customer isn't on Peppol?
- Consumers don't need Peppol. They simply get an invoice by email.
- Businesses outside Belgium are often not on Peppol (yet). A regular invoice by email, with the right VAT wording, is then the normal route.
- Belgian VAT-registered businesses must be able to receive e-invoices since 2026. If you can't find them, ask for their Peppol ID. Often they have already activated it through their accounting software without knowing, or still need to.
Always send a PDF as well, so your customer knows what to pay. If you're unsure whether an invoice must go over Peppol in a particular case, talk to your accountant. More on the Belgian rules in e-invoicing in Belgium.
How PeppolKit handles this
PeppolKit doesn't ask your customer for a Peppol ID. It uses the VAT number your customer enters with the order, checks it live with VIES and derives the Peppol address from it. If the customer is on Peppol, the invoice goes through our partner's certified access point. Everyone also gets the invoice as a PDF by email. See pricing.
Frequently asked questions
What is the Peppol ID of a Belgian business?
Usually 0208 followed by the ten-digit enterprise number, without dots and without BE. VAT number BE0123.456.789 becomes 0208:0123456789.
Where can I look up a Peppol ID?
In the public Peppol Directory (directory.peppol.eu), by name or number. Being listed there is optional, so if you can't find a business, ask your customer.
Which Peppol ID does a Dutch business use?
Usually 0106 with the KvK number or 9944 with the VAT number. Government bodies often use 0190 with their OIN.
What if my customer isn't on Peppol?
Send the invoice by email as a PDF. If it's a Belgian VAT-registered business, ask for its Peppol ID, because those businesses must be able to receive e-invoices since 2026.
Let PeppolKit do the lookups.
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