Locations (Headquarters / Branches)

2021/09/07

Head Office

mapOffice (General Incorporated Association) Telecom Services Association
8F Flora Bldg., Nihonbashi Ningyocho 3-10-2, Chuo, Tokyo 103-0013
TEL:03-5644-7500 FAX:03-5644-7646
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  • Nearest station
    Ningyocho (Hibiya Line / Toei Asakusa Line)
    3-minute walk from exits [A4 / A5]
  • GoogleMap


Chair companies / offices of all branches nationwide

Hokkaido Branch

  • Chair Company
    HBA Corporation TEL: 011-231-8301
  • Office
    HBA Corporation
    Kita 4-jo Nishi 7-chome 1-8, Chuo-ku, Sapporo, Hokkaido 060-0004 Japan
    Tel: +81-11-231-8301 Fax: +81-11-281-0915

    Contact: Contact:INOMATA Hirofumi, Vice Manager

Tohoku Branch

  • Chair Company
    NTT DATA Tohoku Corporation
  • Office
    NTT DATA Tohoku Corporation
    1-9-1 Ichibancho, Aoba-ku, Sendai City, Miyagi Prefecture 980-0811 Japan
    TEL: 022-721-5605 FAX: 022-721-5531
    Contact: Minako Taira, General Manager of Planning G Department

Kanto Branch

  • Chair Company
    INTEC Solution Power Inc. TEL: +81-3-3372-4440
  • Office
    Inside Head Office
    8F Flora Bldg., Nihonbashi Ningyocho 3-10-2, Chuo, Tokyo 103-0013 Japan
    TEL: 03-5644-7500 FAX: 03-5644-7646
    Contact: Mizuyuki Fukushima (INTEC Inc.) Mito (Miroku Jyoho Service Co., Ltd.)

Shin’etsu Branch

  • Chair Company
    Densan Co., Ltd. TEL: 026-224-6666
  • Office
    Densan Co., Ltd.
    Nanasenakamachi 276-6, Tsuruga, Nagano City, Nagano Prefecture 380-0904 Japan
    TEL: 026-224-6666 FAX: 026-219-2621
    Contact: Yuji Maruyama, Data Services Division, Data Center

Hokuriku Branch

  • Chair Company
    I-O Data Device Inc. TEL: 076-260-3373
  • Office
    I-O Data Device Inc.
    Sakuramachi 3-10, Kanazawa, Ishikawa Prefecture 920-8512 Japan
    TEL: 076-260-3373 FAX: 076-260-3370
    Contact: President’s Office; Masahiko Otomura

Tokai Branch

  • Chair Company
    Seino Information Service Co., Ltd. TEL: 0584-73-8888
  • Office
    Seino Information Service Co., Ltd.
    Seino Softopia Bldg., Kagano 4-1-16, Ogaki, Gifu Prefecture 503-0006 Japan
    TEL: 0584-77-2314 FAX: 0584-77-2312
    Toshiaki Kawamura, PMO Office Director

Kinki Branch

  • Chair Company
    Starnet Co., Ltd. TEL: 06-6220-4501
  • Office
    Starnet Co., Ltd.
    Sumitomo No.2 Bldg., 4-7-28 kitahama, Chuo-Ku, Osaka City, Osaka 541-0041 Japan
    TEL: 06-6220-4501 FAX: 06-6220-4507
    Contact: Tetsuro Fukuyama, Administrative Department,Deputy General Manager, Tetsuro Fukuyama

Chugoku Branch

  • Chair Company
    Energia Communications, Inc. TEL: 050-8201-1424
  • Office
    Energia Communications, Inc.
    GRANODE Hiroshima, 3-5-7 Futabanosato,Higashiku,Hiroshima 732-0057 Japan
    TEL: 050-8201-1424 FAX: 082-548-8871
    Contact: Yasumasa Noda, Business Strategy Dept.

Shikoku Branch

  • Chair Company
    EHIME CATV, Inc. TEL: 089-943-5001
  • Office
    Ehime CATV, Inc.
    Otemachi 1-11-4 , Matsuyama, Ehime Prefecture 790-8509 Japan
    Contact: Naruto Shiraishi, Managing Director

Kyushu Branch

  • Chair Company
    Minaminihon Information Processing Center Co., Ltd.
    TEL: 099-269-9700
  • Office
    Minaminihon Information Processing Center Co., Ltd.
    Tokaicho 4-104, Kagoshima City, Kagoshima Prefecture 891-0115 Japan
    TEL: 099-269-9700 FAX: 099-269-9701
    Contact: Hirotoshi Takeshita, Business Management Office Director

Okinawa Branch

  • Chair Company
    Ryukyu Tsushin Koji Co., Ltd. TEL: 098-867-4111
  • Office
    Ryukyu Tsushin Koji Co., Ltd.
    Asato 3-4-12, Naha, Okinawa Prefecture 902-0067 Japan
    TEL: 098-867-4111 FAX: 098-867-4113
    Contact: KISE Masashi , Executive, Safety & Quality Control Department and Network Engineering Division
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