Colombia Tax Identification Number

Detects Colombia Tax Identification Number patterns. This pattern is based on a Microsoft Purview built-in sensitive information type. Due to the numeric format, corroborative evidence keywords are essential for reliable detection.

Type: regex
Engine: universal
Confidence: medium
Confidence justification: Medium confidence: variable-length numeric patterns are common. Colombian NIT keywords like 'NIT' or 'DIAN' are required for reliable identification. Added context gating and exclusion rules improve precision and reduce incidental matches.
Detection quality: Mixed
Jurisdictions: co
Regulations: Habeas Data Law (Colombia)
Data categories: pii, financial, government-id
Scope: narrow
Risk rating: 5
Platform compatibility: Purview: Compatible, GCP DLP: Compatible, Macie: Compatible, Zscaler: Compatible, Palo Alto: Compatible, Netskope: Compatible

Pattern

\b\d{6,10}-?\d?\b

Corroborative evidence keywords

NIT, número de identificación tributaria, DIAN, RUT, cédula, tax identification, [object Object], tax identification number, tax number, tax return, [object Object], [object Object], tax ID, inland revenue, taxpayer identification, αριθμός φορολογικού μητρώου, ΑΦΜ, φορολογικός, Abgabenkontonummer, adóazonosító (+47 more)

Proximity: 300 characters

Should match

900123456-7 — Colombian NIT with check digit
1234567890 — Ten-digit Colombian tax ID
123456-7 — Short-form Colombian NIT

Should not match

12345 — Too few digits for Colombian tax ID
123456789012 — 12 digits exceeds maximum length for Colombian NIT
template example placeholder record identifier — Template/sample context should be excluded even when anchor words are present

Known false positives

Generic numeric sequences in non-tax contexts such as reference numbers or account identifiers Mitigation: Require corroborative evidence keywords within the proximity window to distinguish tax identifiers from general numeric data.
Numbers from other identification schemes with similar digit patterns Mitigation: Layer with jurisdiction-specific detection to prioritise matches in tax-related documents and cross-reference with other identifier types.