Telecom operatorTier 1
NTT
Japanese telecom and IT services group.
- Headquarters
- Revenue
- JPY 14409.1bnFY2025source ↗
- Employees
- 344,1962026-03-31source ↗
- Also
- managed services
- Customers
- ConsumerEnterprise
- Domains
- MobileFixed & fibreCloud
- Website
- group.ntt/en ↗
MVNOs on this network6
- — 日本専用でNTTドコモ、KDDIのいずれかを選択
- — 音声月額料金 ドコモ網・au網 (voice monthly fee: docomo network / au network)
- — （使用回線） ａｕ、ドコモ、ソフトバンク
- — ドコモ回線、au回線、ソフトバンク回線よりお選びいただけます。
- — （使用回線） ａｕ、ドコモ ... ドコモプランの場合：「音声＋データ」タイプ、「データ」タイプ
- — docomoネットワークを利用した格安SIMサービス
Brands it runs itself1
- OCN Mobile ONE — own-network brand, not an MVNO; docomo’s former economy MVNO (NTT Resonant); closed to new sign-ups since June 2023, existing customers served by docomo
Technology5
BSS
OSS
Relationships16
Owns
- 31 Mar 2025
- 28 Feb 2019
- 1 Jul 2022
Acquired
- 28 Feb 2019
Hosted MVNOs
Suppliers
- announced
- 18 Jan 2023
- 2021
- 15 Oct 2025
- announced
Signals4
- 13 Oct 2026
- 7 Oct 2026
- 1 Mar 2026
- 26 Sept 2025
Ecosystem
owns
- 57.76% of voting rights, before the 2025 tender offeractive · 31 Mar 2025 · Documented
- Majority; percentage not statedactive · 28 Feb 2019 · Documented
- 50% joint ventureactive · 1 Jul 2022 · Documented
- Subseaactive · Reported
acquired
- Mobile · MVNO/MVNE; majority completed 2019-02-28active · 28 Feb 2019 · Documented
hosts
- Mobile · 日本専用でNTTドコモ、KDDIのいずれかを選択active · Reported
- Mobile · 音声月額料金 ドコモ網・au網 (voice monthly fee: docomo network / au network)active · Company statement
- Mobile · （使用回線） ａｕ、ドコモ、ソフトバンクactive · Reported
- Mobile · ドコモ回線、au回線、ソフトバンク回線よりお選びいただけます。active · Reported
- Mobile · （使用回線） ａｕ、ドコモ ... ドコモプランの場合：「音声＋データ」タイプ、「データ」タイプactive · Reported
- Mobile · docomoネットワークを利用した格安SIMサービスactive · Company statement
supplied by
- ITSM · inter-carrier autonomous roaming resolution with StarHub (NTT DOCOMO; demonstration)announced · 1 Mar 2026 · Company statement
- Charging & billing · NTT DOCOMO — Charging Gateway Function (CGF) linking the 5G SA core to DOCOMO's BSS (NEC/Netcracker)active · 18 Jan 2023 · Documented
- OSS · NTT DOCOMO — Zero-Touch Operation (ZTO) automating remote network maintenance tasksactive · 2021 · Documented
- BSS · NTT DOCOMO — Beyond Now Digital Business Platform (SaaS) for the smart Anshin Hoshou device-compensation service (support requests, multi-channel customer interactions)active · 15 Oct 2025 · Documented
- OSS · NTT DOCOMO — OSS for LTE launch: WDM transport and L2-switch management (contract signed by NEC, deployed by NetCracker)announced · 9 Dec 2009 · Reported