Country pack
Czech Republic PII detection: rodné číslo, IBAN
Short answer
Maskflare's Czech Republic pack has 4 detectors. 2 validate a check digit or letter, 1 tests layout or an embedded date, 1 matches on pattern alone.
What the Czech Republic pack covers
The Czech Republic pack holds 4 detectors: Birth number (rodné číslo, also social security), IBAN, Phone number and Postal code. 2 of them recompute a check digit or letter, 1 tests layout or an embedded date only, 1 is pattern-only, and 1 waits for a keyword before it matches.
| Detector | Category | Validation | Valid example |
|---|---|---|---|
| Birth number (rodné číslo, also social security) | national ID number | Checksum | 780123/3540 |
| IBAN | bank account number (IBAN) | Checksum | CZ65 0800 0000 1920 0014 5399 |
| Phone number | phone number | Layout rules | +420 601 234 567 |
| Postal code | postal code | Pattern only | 110 00 |
Every Czech Republic detector in detail
Birth number (rodné číslo, also social security)
A national identity number. Validation: an embedded birth date and, for 10 digits, divisibility by 11. A run of digits with no separator is judged by words nearby; the detector's own keywords include birth number, id no, id number, identity number. Valid example: 780123/3540; the same shape that fails is 780123/3541.
IBAN
A bank account identifier. Validation: the registered length for the country and the ISO 13616 modulus 97 check. Valid example: CZ65 0800 0000 1920 0014 5399; the same shape that fails is CZ65 0800 0000 1920 0014 5390.
Phone number
A telephone number in the national format. Validation: between 7 and 15 digits, the range an international number can have. Valid example: +420 601 234 567.
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 8 keywords within 48 characters before the value, such as post code, postal code, postcode, psc. Valid example: 110 00.
Local-language context words for Czech Republic
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.
- Birth number (rodné číslo, also social security):
birth number,r.č.,rodne cislo,rodné číslo,rč - Postal code:
psc,psč
How Maskflare masks Czech Republic 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 Czech Republic is a primary country.
- Monitor first: alert (counted, forwarded unchanged) when Czech Republic is a primary country.
Compliance profiles that include the Czech Republic 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 4 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 Czech Republic identifiers.
Frequently asked questions
What does Maskflare detect for Czech Republic?
4 detectors: Birth number (rodné číslo, also social security), IBAN, Phone number and Postal code.
Are Czech Republic identifiers masked by default?
They are masked when Czech Republic 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 Czech Republic identifiers have a checksum?
Birth number (rodné číslo, also social security) and IBAN.
Do the Czech Republic detectors need keywords?
1 of them do: 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.