/etc/cron.d/nordugridmap is in nordugrid-arc-gridmap-utils 5.4.2-1build1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 | #NorduGrid VO automatic grid-mapfile creation
11 3,9,12,15,21 * * * root /usr/sbin/nordugridmap
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