http://toolbar.netcraft.com/site_report?url=http://www.kcna.co.jp
Netcraft do not have an uptime graph.
no doubt related to zainichi chosen jin in Japan. they are DPRK slanted/allied Koreans living in Japan, second, third and fourth generation, allied to Pyongyang and also probably part of Chongryon group here in Tokyo....or at least a sympathetic Japanese domain hoster.