/usr/lib/cgi-bin/zc.cgi is in zonecheck-cgi 3.0.3-2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/cgi-bin/../../share/zonecheck/zc/zc.rb
/usr/lib/cgi-bin/../../share/zonecheck/zc/zc.rb