DNS/DNSSEC analysis tool
View the entire chain from the root to your domain: is DNSSEC correct, do all nameservers respond, and what should you do if something's wrong. In plain language.
You can still do 5 of the 5 measurements without signing up. After that, sign up for free with your email address.
Prefer to sign up with your email address right away?
Analysis with dnsviz (open source, GPL), display and explanation by WebOké.
We store a measurement for 48 hours, with the domain and your student number (without logging in: an encrypted code of your IP address and of this device, only to count the free measurements). Anyone with the link can see the result; this is data that's already public in DNS anyway.