The project history of JGN2 is as follows:

Network April 1, 2004 Launching the JGN2 Project August 1, 2004 Launching the JGN2 Japan-US Circuit Operation November 7, 2005 Launching the JGN2 Japan-SG Circuit Operation November 7, 2005 Launching the JGN2 Japan-TH Circuit Operation   Facilities April 1, 2004 Opening Tohoku JGN2 Research Center April 1, 2004 Opening Tsukuba JGN2 Research Center April 1, 2004 Opening Otemachi JGN2 Research Center April 1, 2004 Opening Osaka JGN2 Research Center April 1, 2004 Opening Okayama JGN2 Research Center April 1, 2004 Opening Kochi JGN2 Research Center April 1, 2004 Opening Kitakyushu JGN2 Research Center February, 2006 Establishing of Access point in Akihabara Daibiru Remarks: The number of nationwide access points has become 64 in total. April 1, 2006 Tohoku Research Center of which name has been changed from Tohoku JGN2 Research Center April 1, 2006 Tsukuba Research Center of which name has been changed from Tsukuba JGN2 Research Center April 1, 2006 Otemachi Research Center of which name has been changed from Otemachi JGN2 Research Center April 1, 2006 Osaka Research Center of which name has been changed from Osaka JGN2 Research Center April 1, 2006 Chugoku Research Center of which name has been changed from Okayama JGN2 Research Center April 1, 2006 Shikoku Research Center of which name has been changed from Kochi JGN2 Research Center April 1, 2006 Kyushu Research Center of which name has been changed from Kitakyushu JGN2 Research Center