.au Domain Observatory

Explainers

Plain-language explainers for governance, communications and technical readers who need to understand how public domain-layer signals are observed, what they may suggest, and what they cannot prove.

Plain languagePublic signalsGovernance context

What these explainers are for

.auDO observes public domain-layer signals across a fixed panel of .au domains. These explainers describe the concepts behind those observations in plain language.

They are designed for readers who need to interpret DNS, registration, mail posture and provider signals without turning visible change into unsupported conclusions.

Public signals can help make domain-layer change easier to notice, explain and govern. They do not, by themselves, prove risk, intent, operational concern or poor governance.

Domain-layer explainers

Domain-layer governance

A non-specialist guide to treating domains, DNS, registration and mail posture as managed organisational assets.

Read explainer State of .au

What is RDAP?

How public registration data can show registrar, status, date and related metadata signals for observed domains.

Read explainer State view

What registrar changes can mean

How visible registrar movement can reflect administration, supplier change, consolidation or portfolio management.

Read explainer State view

Why nameserver changes matter

How nameserver movement can indicate visible DNS control-plane change without implying concern by default.

Read explainer State view

Why DMARC matters

What DMARC can tell observers about visible mail posture, and where public DMARC evidence has clear limits.

Read explainer State view

What is DNSSEC?

How DNSSEC-related evidence appears in public observations, and what visible presence or absence can and cannot show.

Read explainer State view

How to use these pages

Use these explainers as a companion to the .auDO Signals library, State of .au pages and dated reports.

Signals explain the field-level evidence .auDO records. State pages summarise the current observed panel. Reports preserve dated evidence. Cohorts provide grouped context where a reader wants to compare public signals across a defined set of domains.

None of these views should be read as a rating, ranking, compliance finding or security assessment.

Use Signals for field-level meaning, State pages for aggregate posture, Reports for dated evidence, Cohorts for grouped context and Methodology for collection limits.

SignalsState of .auReportsObserved cohortsMethodology