Country pack
Netherlands PII detection: BSN, IBAN
Short answer
Maskflare's Netherlands pack has 5 detectors. 2 validate a check digit or letter, 2 test layout or an embedded date, 1 matches on pattern alone.
What the Netherlands pack covers
The Netherlands pack holds 5 detectors: Citizen service number (BSN), IBAN, Licence plate, Phone number and Postal code. 2 of them recompute a check digit or letter, 2 test layout or an embedded date only, 1 is pattern-only, and 3 wait for a keyword before they match.
| Detector | Category | Validation | Valid example |
|---|---|---|---|
| Citizen service number (BSN) | national ID number | Checksum | 111222333 |
| IBAN | bank account number (IBAN) | Checksum | NL91 ABNA 0417 1643 00 |
| Licence plate | vehicle identifier | Layout rules | AB-123-C |
| Phone number | phone number | Layout rules | +31 6 12345678 |
| Postal code | postal code | Pattern only | 1012 AB |
Every Netherlands detector in detail
Citizen service number (BSN)
A national identity number. Validation: the 11-test over nine digits. It needs one of 16 keywords within 48 characters before the value, such as bsn, burgerservicenummer, citizen service, document number. Valid example: 111222333; the same shape that fails is 111222330. Full guide: Dutch BSN.
IBAN
A bank account identifier. Validation: the registered length for the country and the ISO 13616 modulus 97 check. Valid example: NL91 ABNA 0417 1643 00; the same shape that fails is NL91 ABNA 0417 1643 01.
Licence plate
A vehicle licence plate. Validation: 4 to 10 letters and digits with at least one of each, shaped by the country's plate formats. It needs one of 19 keywords within 48 characters before the value, such as kenteken, kentekennummer, kentekenplaat, licence plate. Valid example: AB-123-C.
Phone number
A telephone number in the national format. Validation: between 7 and 15 digits, the range an international number can have. A run of digits with no separator is judged by words nearby; the detector's own keywords include anrufen, appeler, appelez, appelle. Valid example: +31 6 12345678.
Postal code
A postal code, which identifies a place rather than a person on its own. Validation: the pattern only, with no checksum or structural validator. It needs one of 6 keywords within 48 characters before the value, such as post code, postal code, postcode, zip. Valid example: 1012 AB.
Local-language context words for Netherlands
These are the words in the catalogue that confirm a value as belonging to this country's detector. Shared English words such as ID number or tax id are left out here because many packs use them; a word below points at this pack even when other packs are on.
- Citizen service number (BSN):
bsn,burgerservicenummer,citizen service,document number,sofi,sofinummer - Licence plate:
kenteken,kentekennummer,kentekenplaat,licence plate,licence plate number,license plate,license plate number,license tag,number plate,nummerplaat,plate,plate noand 7 more - Phone number:
anrufen,appeler,appelez,appelle,bel,bellen,call,call me,call me at,call us at,cell,cell phoneand 39 more
How Maskflare masks Netherlands identifiers
Detections are replaced with a token such as mf_mask_d7e0 before the request goes to the AI provider, and with response restoration turned on the real value is put back in the answer. The other actions are redact, partial, hash, format-preserving encryption, generalize, alert and block.
- Protect now, Finance - Protect now, Healthcare and Developer: mask (a reversible token) when Netherlands is a primary country.
- Monitor first: alert (counted, forwarded unchanged) when Netherlands is a primary country.
Compliance profiles that include the Netherlands pack: GDPR - EU/EEA.
Limits worth knowing
- A passing checksum shows that a value is well formed, not that it was issued to a real person. The examples on this page pass for that reason and are not real.
- 1 of the 5 detectors here matches on pattern alone (Postal code), so it can match text that merely has the same shape.
- Detectors read the text of the request. A value inside an image is found only after OCR, and a value split across lines is not one match.
- Names, addresses and free-text details are handled by other packs. This page is limited to the Netherlands identifiers.
Frequently asked questions
What does Maskflare detect for Netherlands?
5 detectors: Citizen service number (BSN), IBAN, Licence plate, Phone number and Postal code.
Are Netherlands identifiers masked by default?
They are masked when Netherlands is chosen as a primary country (the default Protect now template uses the action mask), or when the pack is turned on directly. A country pack is not on for organisations that did not choose the country.
Which Netherlands identifiers have a checksum?
Citizen service number (BSN) and IBAN.
Do the Netherlands detectors need keywords?
3 of them do: Citizen service number (BSN), Licence plate and Postal code.
Rules on this page describe what Maskflare's detectors and validators check. They are read from the detection catalogue and are not the specification of the body that issues the identifier. Examples are synthetic.