NTT-AT Systems
NTT-AT Systems is a Japanese wholly-owned subsidiary of NTT Advanced Technology providing ICT services — software development, network operations, cloud, NOC/SOC, and DX support — primarily to NTT Group companies and secondarily to enterprises and government.
- Company typePrivate
- Founded2000
- HeadquartersMusashino, Japan
- Headcount101–250
- GTM typeB2B
- OfferingServices
What NTT-AT Systems does
NTT-AT Systems Corporation (NTT-ATシステムズ株式会社) is a Japanese ICT services company established in October 2000 as a wholly-owned subsidiary of NTT Advanced Technology Corporation, itself part of the NTT Group. Operating from headquarters in Musashino, Tokyo, with additional offices in Osaka and Yokohama (Minato Mirai), the company employs 357 people as of July 2026 and provides software development, network infrastructure services, 24/7 NOC/SOC operations, cloud services, DX promotion, and PC support. Its primary customers are NTT Group entities — including NTT East, NTT West, NTT Research Laboratories, and NTT Advanced Technology — for whom it develops and operates carrier-grade systems spanning NGN (Next Generation Network), legacy PSTN, fiber services, and the next-generation IOWN (Innovative Optical and Wireless Network) platform.
The company's technology stack spans operation systems, security systems, and AI-related systems using Java, Python, Go, Perl on Linux/Windows Server and Ubuntu environments, with proprietary know-how in GPU server construction for ML/DL verification environments. It maintains ISO 9001, 14001, 20000-1, and 27001 certifications, qualifying it for regulated enterprise and government work. Its core competitive position rests on deep NTT Group integration, mission-critical telecom engineering talent, and end-to-end ICT lifecycle coverage from upstream sales consulting through design, build, verification, operations, and maintenance.
Revenue is generated through professional services and managed services contracts, primarily via direct sales to NTT Group operating companies, with a secondary direct-sales motion into general enterprises and government/local public bodies. Pricing for external customers is not publicly disclosed. The company is wholly-owned and private, with no external funding rounds, M&A activity, or IPO plans indicated in the source data.
NTT-AT Systems firmographics
Firmographics- Name
- NTT-AT Systems
- Legal name
- NTT-ATシステムズ株式会社
- Website
- https://ntt-ats.co.jp
- Company type
- Private
- Founded year
- 2000
- Operating status
- Operating
- Headcount range
- 101–250 employees
- Short description
- NTT-AT Systems is a Japanese wholly-owned subsidiary of NTT Advanced Technology providing ICT services — software development, network operations, cloud, NOC/SOC, and DX support — primarily to NTT Group companies and secondarily to enterprises and government.
- Ownership category
- akta.pro rank
Where NTT-AT Systems is headquartered
LocationHeadquarters
- HQ city
- Musashino
- HQ country
- Japan
- HQ region
- Asia
Offices4 records
Markets served
NTT-AT Systems business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Personnel, Technology or R&D, Infrastructure, Operations
Revenue model
- NTTグループ向け通信インフラ関連業務: NTT東日本・NTT西日本の次世代ネットワーク(NGN)、フレッツ光、ひかり電話などのキャリアNWサービスの開発・商用導入支援。NTT研究所向けの研究試作システム支援。
- 社内システム運用・保守業務: NTTグループ向け社内OAサービス、DX推進サービス、研究所OAシステムの運用支援、PCサポート、システムの企画・提案・構築・運用一貫ソリューション。
- NOC/SOC運用サービス: 24時間365日のネットワークオペレーションとセキュリティオペレーションサービス。客户インフラの遠隔監視・保守運用。定型的な監視・運用サービスを低コストで提供する共通運用基盤も展開。
- クラウドサービス提供・運用: 自社クラウド設備によるクラウドサービスの提供とオペレーション。パブリッククラウド(PaaS/IaaS)の構築・保守運用。GPUサーバ構築/運用サービス。
- 一般企業・自治体向けソリューション: キャリアネットワークサービスの維持・高度化支援と、企業・自治体向けシステムの構築・運用・保守。ITソリューション提供。
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Subscription | Monthly | 修士了 初任給 |
| Subscription | Monthly | 大学卒 初任給 |
| Subscription | Monthly | 高専卒 初任給 |
| Subscription | Monthly | 短大・専門卒 初任給 |
Go-to-market motion2 records
Distribution channels2 records
Marketing channels4 records
NTT-AT Systems product offering
Product offeringCore offering
NTT-AT Systems provides comprehensive ICT services for NTT Group companies and external enterprises, including software development, system operations and maintenance, and network design/construction/operations as an integrated one-stop solution. The firm specializes in supporting carrier network services (NGN, FLET'S Hikari, Hikari Denwa), IOWN research and development, security systems, cloud migration, and 24/7 NOC/SOC operations for mission-critical infrastructure.
Product overview
NTT-AT Systems operates as an integrated ICT services provider offering a comprehensive portfolio of services to NTT Group companies and external enterprises. The portfolio consists of: Network Infrastructure Services (network design, construction, verification for NGN/IOWN and PSTN migration), Software Development (full lifecycle from requirements to maintenance), Network/Server Lifecycle Management (planning through evaluation), Cloud Services (private/public cloud, GPU server environments), NOC/SOC Operations (24/7 monitoring and security operations), DX Promotion (cloud adoption and workflow system implementation), and PC Support. These services work together as an end-to-end ICT solutions portfolio spanning consulting, development, construction, operations, and maintenance.
Differentiator
Problem solved
Functional benefit
Products and services
- Network Infrastructure Services
Quantifiable outcome
- 24時間365日体制でのインフラ監視・運用対応
- +1 more outcomes
Companies that use NTT-AT Systems
Customer profileNamed customers7 records
Segments3 records
Ideal customer profiles3 records
NTT-AT Systems technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
AI capability1 record
Feature7 records
NTT-AT Systems partnerships and signals
Strategic signalPartnerships
One partnership is on record.
- NTTアドバンステクノテクノロジ株式会社core親会社。NTT-ATシステムズの100%株式を保有。NTT研究所やNTT東西とのグループ連携における中核企業。社内外の情報セキュリティ支援業務や社内OAサービス提供を実施。
Scale indicators3 records
Recent moves6 records
Expansion highlights6 records
NTT-AT Systems competitors and assessment
Company assessmentBroad incumbents
- NTT Communications: NTT Group's telecom services arm providing enterprise network, cloud, and managed services. Overlaps with NTT-AT Systems' network services and cloud operations capabilities, but at substantially larger scale and with a broader product portfolio.
- Fujitsu: Major Japanese IT services and hardware provider with global operations. Competes across system integration, managed services, and network services; much larger scale with a broader portfolio that includes hardware and platform products.
- NEC Corporation: Major Japanese IT services and network equipment provider. Competes across system integration, managed services, and network operations at much larger scale and with a broader product portfolio that includes biometric, AI, and network hardware.
- Hitachi: Japanese conglomerate with significant IT services and system integration business through Hitachi Vantara and other subsidiaries. Competes in system integration and managed services with a much broader portfolio spanning industrial systems, OT, and IT.
- NTT Data: Largest NTT Group IT services company with tens of thousands of employees and global operations. Offers a much broader system integration, consulting, and managed services portfolio than NTT-AT Systems, serving enterprise and government customers worldwide.
Direct peers
- BIPROGY: Japanese system integrator (formerly UNISYS Japan) providing IT services across enterprise and government customers. Comparable in offering system integration, cloud services, and managed services to a similar Japanese enterprise and public-sector customer base.
- Otsuka Corporation: Japanese IT services company providing system integration, network services, and managed services primarily to mid-market and enterprise Japanese customers. Comparable in offering bundled ICT solutions including network operations, security services, and end-user PC support.
- NTT Data Intellilink: Subsidiary of NTT Data focused on system development and IT services primarily for NTT Group companies. Operates a comparable captive IT services model with similar offerings in system integration, software development, and operational support for telecom and enterprise clients.
- NTT Advanced Technology: Parent company of NTT-AT Systems and NTT Group's specialist technology subsidiary. Provides overlapping network infrastructure, AI research support, and security services to NTT Group entities, with comparable IOWN, network operations, and software development capabilities.
- NS Solutions: Japanese system integrator providing IT services and solutions across industrial and enterprise customers. Comparable in service portfolio breadth (system design, development, operations) and customer-base orientation toward large Japanese enterprises.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat4 records
Key risks6 records
Key highlights7 records
Customer concentration
NTT-AT Systems compliance and trust
Trust signalCompliance4 records
NTT-AT Systems financial estimates
Financial estimateRevenue estimate
Valuation estimate
NTT-AT Systems leadership team
Management profileNumber of profiles
Profiles10 records
NTT-AT Systems funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
NTT-AT Systems M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about NTT-AT Systems
What does NTT-AT Systems do?
NTT-AT Systems provides comprehensive ICT services for NTT Group companies and external enterprises, including software development, system operations and maintenance, and network design/construction/operations as an integrated one-stop solution. The firm specializes in supporting carrier network services (NGN, FLET'S Hikari, Hikari Denwa), IOWN research and development, security systems, cloud migration, and 24/7 NOC/SOC operations for mission-critical infrastructure.
Is NTT-AT Systems a public or private company?
NTT-AT Systems is a private company. It is classified as corporate owned and is currently operating.
When was NTT-AT Systems founded?
NTT-AT Systems was founded in 2000. It employs 101 to 250 people.
Where is NTT-AT Systems based?
NTT-AT Systems is headquartered in Musashino, Japan, in the Asia region.
How does NTT-AT Systems make money?
Five revenue lines are on record. NTTグループ向け通信インフラ関連業務 is the primary driver. The others are 社内システム運用・保守業務, NOC/SOC運用サービス, クラウドサービス提供・運用 and 一般企業・自治体向けソリューション.
Who are NTT-AT Systems's main competitors?
Broad incumbents on record are NTT Communications, Fujitsu, NEC Corporation, Hitachi and NTT Data. Direct peers are BIPROGY, Otsuka Corporation, NTT Data Intellilink, NTT Advanced Technology and NS Solutions.
Does NTT-AT Systems have an API?
No public API is recorded for NTT-AT Systems.