Private company

NTT West

Logo: Yusaku Kamekura / NIPPON TELEGRAPH AND TELEPHONE CORPORATION, Public domain, via Wikimedia Commons³

NTT West is a Japanese telecommunication company based in Higashinoda-machi, founded in 1999.¹ It is part of NTT, Inc.¹

NTT西日本株式会社（エヌティティにしにほん、英: NTT WEST, Inc.）は、大阪府大阪市都島区に本社を置く、地域電気通信事業を業とする大手電気通信事業者。NTTの完全子会社で、NTTグループ主要8社の一つ。² From the Japanese Wikipedia, CC BY-SA 4.0

Last updated Oct 20, 2026.

Overview

Jul 1, 1999Founded¹

HeadquartersHigashinoda-machi, Japan¹
Websitewww.ntt-west.co.jp
Legal formSpecially designated public corporation, kabushiki gaisha¹

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Corporate structure

NTT West is part of a group headed by NTT, Inc.. 178 entities, 36 countries on record. Switch between the flow chart and the network, and select any entity to see its details.

NTT, Inc. 東京都千代田区, Japan
- NTT Data Group 100% · Boston, Massachusetts, United States
  - Atom Technologies Subsidiary · Mumbai
  - Fortience Consulting Subsidiary · Chiyoda, Japan
  - Kamco Subsidiary · Melbourne
  - Keane Subsidiary · Boston
  - NTT Data (Germany) Subsidiary · Munich, Germany
  - NTT Data Engineering Systems Corporation Subsidiary · Tokyo
  - NTT Data Italia Subsidiary · Milan, Italy
  - NTT DATA Spain Subsidiary · Madrid, Spain
  - NTT DATA INFORMATION PROCESSING SERVICES PRIVATE LIMITED Subsidiary · Bangalore, India
  - NTT DATA SERVICES INTERNATIONAL TREASURY CENTER, INC. Subsidiary · Plano, Texas, United States
- NTT DATA Business Solutions Bielefeld, Germany
  - NTT DATA Business Solutions a.s. Subsidiary · 100% · Brno, Czechia
  - NTT DATA Business Solutions A/S Subsidiary · 100% · Horsens, Denmark
  - ITC Information Technology Consulting Gesellschaft für Netzwerk Management und Systemintegration mbH Subsidiary · Bielefeld, Germany
- NTT DoCoMo 東京都千代田区, Japan
  - Tower Records Japan Inc. Subsidiary · 50.3% · Jinnan, Japan
    - Hako Records Subsidiary · Japan
  - Docomo Bike Share Subsidiary · Minato, Japan
  - Docomo Finance Subsidiary · Tokyo, Japan
  - DoCoMo Pacific Subsidiary · Tamuning
  - DOCOMO SMTB Net Bank Subsidiary · Izumi Garden Tower
  - NTT Docomo USA Subsidiary
  - エヌ・ティ・ティ・ドコモ四国 Subsidiary · Kagawa Prefecture, Japan
  - ドコモサービス東北 Subsidiary
  - ドコモ・インシュアランス Subsidiary
  - WOWOW Lemino Stake · 49% · Akasaka Park Building, Japan
- NTT Docomo Business 東京都千代田区, Japan
  - NTT PC Communications Subsidiary · Nishi-Shinbashi, Japan
  - Open Computer Network Subsidiary
  - Verio Subsidiary
  - NTT INDIA SOLUTIONS PRIVATE LIMITED Subsidiary · New Delhi, India
    - NTT COMMUNICATIONS INDIA NETWORK SERVICES PRIVATE LIMITED Subsidiary · New Delhi, India
- NTT West Higashinoda-machi, Japan
  - NTT Business Solutions Subsidiary · Osaka Prefecture, Japan
  - NTT FIELDTECHNO CORPORATION Subsidiary · Higashinoda-machi, Japan
  - NTT Medias Subsidiary · Osaka Prefecture, Japan
  - NTT Solmare Subsidiary · Osaka, Japan
  - NTT西日本-三重 Subsidiary · Mie Prefecture, Japan
  - NTT西日本-四国 Subsidiary · Ehime Prefecture, Japan
  - TelWel West Nippon Subsidiary · Tennōji Ward, Japan
  - NTT SmartConnect Corporation Subsidiary
- Dimension Data Subsidiary · Johannesburg
  - Internet Solutions Subsidiary · Johannesburg
- Here Technologies Subsidiary · Singapore
  - Navteq Subsidiary · Chicago
- NTT Advertising Subsidiary · Tokyo, Japan
- NTT DOCOMO VENTURES Subsidiary · Azabudai, Japan
- NTT East Subsidiary · Nishi-Shinjuku, Japan
- NTT Europe Ltd Subsidiary · London
  - Transatel Subsidiary · France
- NTT ExCPartner Subsidiary · Tokyo, Japan
- NTT Prime Square Subsidiary · Tokyo, Japan
- NTT Urban Solutions Subsidiary · Soto-Kanda, Japan
  - NTT Facilities Subsidiary · Minato
  - NTT Urban Development Subsidiary · Tokyo, Japan
- DIMENSION DATA (SOUTH AFRICA) HOLDINGS (PTY) LTD Subsidiary · Bryanston, South Africa
- DIMENSION DATA COMMERCE CENTRE LIMITED Subsidiary · Douglas, Isle of Man
- DIMENSION DATA GLOBAL MANAGEMENT SERVICES LIMITED Subsidiary · Douglas, Isle of Man
- DIMENSION DATA HOLDINGS LIMITED Subsidiary · London, United Kingdom
- DIMENSION DATA MIDDLE EAST AND AFRICA (PTY) LTD Subsidiary · Johannesburg, South Africa
- E2Y COMMERCE S.L.U Subsidiary · Madrid, Spain
- HATCH INVESTMENTS (MAURITIUS) LIMITED Subsidiary · Moka, Mauritius
- INTAGE INDIA PRIVATE LIMITED Subsidiary · New Delhi, India
- INTERNET SOLUTIONS (PROPRIETARY) LIMITED Subsidiary · Bryanston, South Africa
- JQ NETWORK PTE LTD Subsidiary · Singapore, Singapore
- MERCHANTS SA (PTY) LTD Subsidiary · Bryanston, South Africa
- and 100 more

Built from parent and subsidiary links from GLEIF, the Global Legal Entity Identifier Foundation (CC0); subsidiaries, stakes and holdings from Wikidata (CC0). Each entity in the chart links to its source.

Subsidiaries and ownership

Parent company

NTT, Inc.

Owners

NTT, Inc. 100%

Subsidiaries

From Wikidata.¹

Former names

Nippon Telegraph and Telephone West CorporationJul 1, 1999 to Jun 30, 2025¹

Timeline

Jul 1, 2025Renamed Name changed to NTT West Inc.¹
Jul 1, 2025Renamed Name changed to NTT西日本株式会社¹
Jul 1, 1999Founded Founded¹

Sources

The numbers on this page point here. Each one links to the record it came from.

1
WikidataNTT West on Wikidata
2
WikipediaNTT West on the Japanese Wikipedia
3
Wikimedia CommonsNTT West logo by Yusaku Kamekura / NIPPON TELEGRAPH AND TELEPHONE CORPORATION, Public domain