The Locale::Country module provides access to the ISO two-letter codes for identifying countries, as defined in ISO 3166. You can either access the codes via the section on conversion routines, or with the two functions which return lists of all country codes or all country names.
Binary packages can be installed with the high-level tool pkgin (which can be installed with pkg_add) or pkg_add(1) (installed by default). The NetBSD packages collection is also designed to permit easy installation from source.
The pkg_admin audit command locates any installed package which has been mentioned in security advisories as having vulnerabilities.
Please note the vulnerabilities database might not be fully accurate, and not every bug is exploitable with every configuration.
Problem reports, updates or suggestions for this package should be reported with send-pr.