getauclassent(3) on FreeBSD
The text 4bca86886b37, as FreeBSD 7.4-RELEASE, FreeBSD 7.3-RELEASE, FreeBSD 7.2-RELEASE, FreeBSD 7.1-RELEASE, FreeBSD 7.0-RELEASE, FreeBSD 6.4-RELEASE, FreeBSD 6.3-RELEASE shipped it.
look up information from the audit_class database