Protection of AUT-NUM Object Space

Protection of aut-num object space is done using as-block objects. The mntner object that authorises the creation of aut-num objects is specified by any one of the "mnt-lower:" attributes of the parent as-block object. When no "mnt-lower:" attribute exists, the mntner object from any one of the parent "mnt-by:" attributes is used.

This parent authorisation is only required when an aut-num object is created. It is in addition to the authorisation of the individual object itself.