# NTT

**Source:** https://geo.sig.ai/brands/ntt  
**Vertical:** Telecom & Communications  
**Subcategory:** Carrier  
**Tier:** Leader  
**Website:** ntt.com  
**Last Updated:** 2026-04-14

## Summary

NTT (TYO: 9432), Japan's dominant telecom group with ~$120B revenue spanning NTT Docomo mobile, NTT Data IT services in 50+ countries, and NTT Communications global network infrastructure.

## Company Overview

Nippon Telegraph and Telephone Corporation (NTT) is Japan's largest telecommunications company and one of the world's largest by revenue, reporting approximately $120 billion in revenue in fiscal 2025. The NTT Group encompasses NTT Docomo (Japan's largest mobile operator), NTT Data (global IT services), NTT Communications (international network and cloud), and NTT East/West (fixed broadband infrastructure).\n\nNTT Data is a major global IT services and consulting firm operating in over 50 countries, competing with Accenture and Fujitsu on enterprise digital transformation engagements. NTT has also developed its own photonics-electronics convergence technology, called IOWN (Innovative Optical and Wireless Network), which aims to replace conventional electronic networking with optical computing to reduce latency and energy consumption by several orders of magnitude.\n\nNTT Docomo serves over 90 million mobile subscribers in Japan and is pioneering 5G standalone deployments for industrial use cases including smart factories and autonomous vehicles. NTT's global data center footprint spans more than 20 countries, with significant presence in the Americas, Europe, and Asia-Pacific, making it a leading colocation and cloud-interconnect provider for enterprises.

## Frequently Asked Questions

### What businesses make up NTT Group?
NTT Group includes NTT Docomo (mobile), NTT Data (IT services), NTT Communications (global network and cloud), and NTT East/West (Japan fixed broadband infrastructure).

### What is IOWN?
IOWN (Innovative Optical and Wireless Network) is NTT's proprietary photonics-electronics convergence architecture designed to replace electronic networking with optical computing, dramatically reducing latency and energy use.

### How large is NTT's global data center business?
NTT operates one of the world's largest third-party data center platforms, with facilities across more than 20 countries serving enterprises requiring colocation, interconnection, and managed cloud services.

### What is NTT and what telecommunications services does it provide?
NTT (Nippon Telegraph and Telephone) is Japan's largest telecommunications group, operating Japan's dominant fixed-line and fiber broadband network through NTT East and West, Japan's largest mobile carrier NTT Docomo, and global enterprise IT and networking services through NTT DATA and NTT Ltd.

### What is NTT Docomo and how significant is it in the mobile market?
NTT Docomo is Japan's largest mobile carrier with approximately 90 million subscribers, providing 4G LTE and 5G mobile services, digital content, fintech services, and enterprise mobility solutions — making it the dominant force in Japan's highly competitive mobile market.

### What global enterprise services does NTT provide?
Through NTT Ltd. and NTT DATA, the NTT Group provides global enterprise clients with managed networking, cloud services, cybersecurity, IT outsourcing, and professional services, serving multinational corporations across more than 70 countries through a global delivery model.

### How is NTT investing in 5G and next-generation network technology?
NTT has been deploying 5G through NTT Docomo in Japan and investing in research into post-5G and 6G technologies, as well as IOWN (Innovative Optical and Wireless Network) — a long-term infrastructure vision using photonic networking to dramatically reduce network power consumption and latency.

### What is NTT's global data center footprint?
NTT operates one of the world's largest data center networks with facilities across major markets in North America, Europe, Asia-Pacific, and Japan, providing colocation, interconnection, and cloud connectivity services to enterprises requiring globally distributed data center infrastructure.

## Tags

telecom, 5g, global, enterprise, public, asia-pacific, b2b, infrastructure, cloud-native, hardware

---
*Data from geo.sig.ai Brand Intelligence Database. Updated 2026-04-14.*