Rijksregisternummer
Detects Rijksregisternummer patterns. This pattern is based on a Microsoft Purview built-in sensitive information type. Users already running Purview may prefer to enable the built-in SIT directly, or use this version as a starting point for customisation.
- Type
- regex
- Engine
- universal
- Confidence
- medium
- Confidence justification
- Medium confidence: pattern has structural constraints but corroborative keywords are recommended to reduce false positive rates. Added context gating and exclusion rules improve precision and reduce incidental matches.
- Detection quality
- Verified
- Jurisdictions
- eu, be
- Regulations
- BDSG, CNIL / LIL, GDPR
- Frameworks
- ISO 27001, ISO 27701
- Data categories
- pii, government-id
- Scope
- wide
- Risk rating
- 5
- Platform compatibility
- Purview: Compatible, GCP DLP: Compatible, Macie: Compatible, Zscaler: Compatible, Palo Alto: Compatible, Netskope: Compatible
Pattern
\b\d{11}\bCorroborative evidence keywords
identifier, number, ID, ID number, identification, ID card, license, permit, registration, certificate, data record, database record, record set, data extract, data export, database table, spreadsheet, data registry, registry entry, master data (+13 more)
Proximity: 300 characters
Should match
85010100145— Standard Belgian national register number90123100234— Alternate register number00010100456— 2000-born register number
Should not match
1234567890— Only 10 digits instead of 11123456789012— 12 digits instead of 111234567890A— Contains a letter instead of all digitstemplate example placeholder record identifier— Template/sample context should be excluded even when anchor words are present
Known false positives
- Long numeric sequences in unrelated contexts (tracking numbers, serial codes) matching the Rijksregisternummer format Mitigation: Use corroborative keywords and, where available, checksum validation to filter false matches.