Director Identification Number (Director ID)

Detects Australian Director Identification Numbers (director IDs / DIN) issued by the Australian Business Registry Services (ABRS). A director ID is a 15-digit number beginning with Australia's ISO 3166 country code 036, followed by an 11-digit unique identifier and a single check digit, often written with spaces or hyphens between groups.

Type: regex
Engine: boost_regex
Confidence: medium
Confidence justification: Medium confidence: a 15-digit number beginning 036 is a distinctive structural signal, but bare 15-digit numeric strings can occur in other contexts, so corroborating director-ID / ABRS keywords are required for reliable detection. The optional label further raises precision when present.
Jurisdictions: au
Regulations: Corporations Act 2001 (Cth), NDB Scheme (Cth), Privacy Act 1988 (Cth)
Frameworks: ISO 27001, ISO 27701
Data categories: government-id, financial
Scope: narrow
Risk rating: 7
Platform compatibility: Purview: Compatible, GCP DLP: Compatible, Macie: Compatible, Zscaler: Compatible, Palo Alto: Degraded, Netskope: Unsupported

Pattern

(?i)(?:\b(?:director\s+id(?:entification)?(?:\s+number)?|DIN)\b\s*[:#-]?\s*)?\b036(?:[\s-]?\d){12}\b

Corroborative evidence keywords

Director Identification Number, director ID, DIN, ABRS, Australian Business Registry Services, company director, ASIC, director appointment, Corporations Act, myGovID, register of directors, directorship

Proximity: 300 characters

Should match

Director ID 036 042 007 415 123 was verified via ABRS before the appointment — Director ID label with space-separated 15-digit DIN
The director identification number is 036-1234-5678-9012 as issued by the registry — Full label with hyphen-separated DIN
DIN: 036000000000010 recorded on the register of directors this quarter — DIN label with unseparated 15-digit number
Please confirm your director ID 036999888777666 before lodgement with ASIC — Director ID label with unseparated DIN

Should not match

The order number 036 refers to the March batch of stationery supplies — 036 followed by non-numeric text, not a 15-digit DIN
Invoice 0361234 dated last week is still outstanding for payment — Short number beginning 036 but far fewer than 15 digits
Director John Smith joined the board in 2021 as a non-executive member — Director prose with no DIN label or number

Known false positives

An unrelated 15-digit number beginning 036 could match the bare numeric form. Mitigation: Require corroborating director-ID / ABRS keywords within the proximity window.
Sample director IDs in ABRS guidance or templates may match the labelled form. Mitigation: The high and medium tiers apply the template-exclusion NOT-group to suppress sample and documentation content.