DNSCheck is a DNS delegation quality checker written in Perl. There is a backend
for performing the checks, and a web frontend written in PHP.

An online web based version can be found at https://dnscheck.iis.se.

A DNSCheck-development mailing list where discussions about development
and features take place can be subscribed to here:
https://lists.iis.se/mailman/listinfo/dnscheck-dev.
Browsing the archive you can do here:
https://lists.iis.se/pipermail/dnscheck-dev/