This site is a project to make searching the .au ccTLD easier. In other words, it is a giant list of .au domains and subdomains.

I was not too happy with the fact that it is quite difficult to get your hands on the .au zonefile. This service certainly isn't the equivalant of having your hands on that zonefile, but it does have a few notable differences:

The primary sources for this index are:

Other sites certainly exist that to index this kind of data (like crt.sh, censys.io), but I have found them unusable when it comes to exploring the .au ccTLD. That's why this exists.

The full source code to every component, including this website, are available on Github:


Some example queries to give you inspiration


An API is available for any purposes. I will document it briefly here.


The query endpoint is slightly complex due to the underlying schema. Refer to the source code of this front-end application for a reference implementation.

GET https://api.ausdomainledger.net/api/v1/query

URL-encoded string to search for. Works like "SQL LIKE". You may use "%" as a wildcard character.
How many records to return. The server may return less records than requested based on server policy.
This is the main pagination mechanism. Use the lowest `first_seen` you saw in a previous result set for the next records.
If you receive a full result set with fully identical `first_seen` timestamps, you can use `last_id` as a secondary pagination key. This is based on the `id` and `last` fields in a result.


A statistics endpoint is available which shows how many domains and eTLD+1s are indexed.

GET https://api.ausdomainledger.net/api/v1/stats


Australian cPanel Webhost Size Showdown - A comparison of cPanel Shared Hosting Providers in Australia at the end of 2017