- Cimx Corporation.
- DSI, Inc.
- Fujitsu Limited
- Green IT Promotion Council.
- IPv6 Promotion Council.
- Japan Agiletech Co., Ltd.
- Keio University.
- LONMARK JAPAN
- Mitsubishi Research Institute,Inc.
- NEC Corporation
- NTT FACILITIES, INC
- Panasonic Electric Works Co., Ltd.
- The Institute of Electrical Installation Engineers of Japan
- The University of Tokyo
- TOSHIBA CORPORATION
- Ubiteq Inc.
- WIDE Project.
- Yamatake Corporation
- Yokogawa Electric Corporation
(Alphabetical order)
- Aichi Tokei Denki Co.,Ltd
- Azbil Corporation
- Cimx Corporation.
- Cisco Systems, Inc
- Citrix Systems Japan K.K.
- ComZeit,INC.
- Daikin Industries, Ltd.
- DSI, Inc.
- Fujitsu Limited
- Fuji Xerox Co., Ltd.
- Green Environment International Co.,Ltd
- Hitachi, Ltd.
- INTEC Inc.
- Intercom Inc.,
- Kajima Corporation
- Kantokowa Co., Ltd.
- KDDI Corporation
- KDDI R&D Laboratories
- KOKUYO Co.,Ltd
- LAC Holdings Inc.
- Mitsubishi Heavy Industries, Ltd.
- Mitsubishi Research Institute,Inc.
- Mitsui Fudosan Co., Ltd.
- MITSUI KNOWLEDGE INDUSTRY CO., LTD.
- NEC Corporation
- NIPPON STEEL & SUMIKIN ENGINEERING CO., LTD.
- NIPPON TELEGRAPH AND TELEPHONE CORPORATION
- NTT COMWARE CORPORATION
- NTTDATA CUSTOMER SERVICE Corporation
- NTT FACILITIES, INC
- OPTiM Corporation
- OTSUKA CORPORATION
- Panasonic Corporation Eco Solutions company
- Panasonic System Networks Co., Ltd.
- Ricoh Company, Ltd.
- Sanki Engineering Co., Ltd.
- Schneider Electric Group Japan
- SEIKO Precision Inc.
- SHINRYO CORPORATION
- System Land .inc
- TAKAOKA ELECTRIC MFG.CO.,LTD.
- Takenaka Corporation
- TOSHIBA CORPORATION
- TOYO DENKI SEIZO K.K.
- Ubiquitous Corporation
- Ubiteq, Inc.
- VeriSign Japan K.K.
(Alphabetical order)
- Chularonkorn University (Thailland)
- Green IT Promotion Council.
- IPv6 Promotion Council.
- Keio University.
- LONMARK JAPAN
- Nagoya University
- Nara Institute of Science and Technology
- Niigata University
- OKAYAMA IPv6 CONSORTIUM.
- Shizuoka University.
- SRM University (India)
- The Institute of Electrical Engineers of Japan
- The Institute of Electrical Installation Engineers of Japan
- The University of Tokyo
- Tokyo Metropolitan Research Institute for Environmental Protection
- Tokyo Metropolitan University
- WIDE Project.
- Yamaguchi pref. Industrial Technology Institute
- Yamaguchi University
(Alphabetical order)
