As IPv4 address exhaustion has advanced to its final stages, some organizations, such as Stanford University, formerly using 36.0.0.0/8 have returned their allocated blocks (in this case to APNIC) to assist in the delay of the exhaustion date.
随着IPv4位址枯竭已进入最后阶段，一些组织（如史丹佛大學，以前使用36.0.0.0/8，现在为APNIC拥有）已返还其拥有的块，以推迟地址耗尽时间。