Where did dnssecmonitor.org go?
In 2010, SURFnet launched a proof-of-concept DNSSEC monitoring tool. At that time, very few tools that could perform this task were available. Luckily, a lot has changed since that time and some great tools are now available. In light of these developments we have decided to discontinue dnssecmonitor.org. For those who are interested, the archived sources of the tool can be downloaded here (subject to the GPLv3 license).
For an excellent overview of the tools currently available for DNSSEC-related monitoring, we’d like to direct you to the Internet Society’s Deploy360 site.