A rego check — short for registration check — is a lookup against a vehicle's registration record using its number plate. In Australia, every state and territory keeps its own registry, and a rego check returns the vehicle identity tied to that plate: year of manufacture, make, model, VIN, body type and transmission, among other fields.
What a rego check returns
The exact fields vary by jurisdiction and provider. CSNB normalizes them into one contract so the same integration works across states. Typical fields include:
search (the plate or VIN you sent), state,
year, make, model, vin,
body and transmission, plus a
_meta object that tells you the data source and confidence.
Plate lookup vs VIN lookup
A plate lookup starts from the registration record: "this plate is currently assigned to which vehicle?" A VIN lookup starts from the vehicle itself and can survive plate changes, import/export and re-registration. Plates are what humans type at a dealership or marketplace; VINs are the stable machine identifier. A good API accepts both in the same parameter.
Why use an API instead of a web form?
Web forms are for one-off manual checks. An API lets you run checks from your own checkout flow, CRM, fleet tool or AI agent, and treat the result as structured data instead of a screenshot. The CSNB AU Rego Check API does exactly that, with a free tier to start.
Try it
Grab a key on RapidAPI and make your first call in under a minute — or read the documentation.