Together with Afnic, The Swedish Internet Foundation develops and maintain the DNS testing tool Zonemaster since 2013. The goal of this partnership is for Zonemaster to become the standard DNS testing tool.

Zonemaster is a program designed to help people to control, measure and better understand how specific domain names work from a DNS perspective.

Availability

Zonemaster is both available as a service on zonemaster.se and zonemaster.net and as an open-source software on Github. Documentation can be found at the document site.

How Zonemaster works

Zonemaster consists of three main parts: The engine (that performs all tests), the command line interface to the engine and the web interface to the engine via a backend. When a request to test a domain name is sent to Zonemaster, the program examines its state of health through traversing the DNS from the root (.) to the TLD and finally the DNS servers. Zonemaster also performs other tests which are documented here.

Integrity

Zonemaster allows anyone to check a domain name and to see its test history. To keep the integrity of the user, only the test data is logged and stored in the system.

International cooperation

Zonemaster is the result of a cooperation between The Swedish Internet Foundation (registry for the TLDs .se and .nu) and Afnic, registry for the TLD .fr and other TLDs within the territories of France.