| AS2506 | SUPERCSI | NTT BUSINESS SOLUTIONS CORPORATION 6-77 Motomach.. | Apnic |
| AS2501 | U-TOKYO | The University of Tokyo Autonomous System | Radb |
| AS23793 | ONRINET | National Institute of Advanced Industrial Scienc.. | Apnic |
| AS17687 | NICE | Nagoya University Furo-cho, Chikusa-ku, Nagoya 4.. | Apnic |
| AS7509 | HINES | Hokkaido University Nishi 5, Kita 8, Kita-ku, Sa.. | Apnic |
| AS4729 | JAERINET | Japan Atomic Energy Agency Funaishikawa 765-1, T.. | Apnic |
| AS3488 | TSUKUBA-NET | Japan Aerospace Exploration Agency 2-1-1 Sengen,.. | Apnic |
| AS2505 | HEPNET-J | High Energy Accelerator Research Organization, K.. | Jpnic |
| AS58647 | KAGAWAU-NET | Kagawa University 2-1 Saiwai-cho, Takamatsu-shi,.. | Apnic |
| AS23781 | TYA-NET | National University Corporation, Toyama Universi.. | Apnic |
| AS37918 | NTTV6NET | NTT Software Innovation Center 3-9-11, Midori-ch.. | Apnic |