NTT headquarters details
- Street address
- 5-1 Otemachi
- City
- Tokyo
- State / region
- Tokyo Prefecture
- ZIP / postal code
- 100-8116
- Country
- Japan
- Phone
- +81 3 6838 5111
- Founded
- 1985
- Website
- group.ntt
- Stock
- JPX: 9432
Location map
Open in Google MapsAll NTT office locations
| City | State / region | Country | Type |
|---|---|---|---|
| Tokyo HQ | Tokyo Prefecture | Japan | Headquarters |
Showing the headquarters of 17 recorded locations. See every location in GraphIQ →
About NTT
NTT (JPX: 9432) is headquartered in Tokyo, Tokyo Prefecture, Japan. Founded in 1985, the company has 17 recorded locations across 6+ countries and employs approximately 341,321 people worldwide.
Where is NTT's main office?
NTT's main headquarters office is located at 5-1 Otemachi, Tokyo, Tokyo Prefecture 100-8116, Japan. This is the company's primary corporate address.
NTT regional offices
Beyond its headquarters in Tokyo, NTT has recorded locations in Japan, Australia, Germany, Italy, Malaysia and United States.
NTT contact information
The main switchboard for NTT headquarters can be reached at +81 3 6838 5111. Official website: group.ntt.
What does NTT do?
NTT, Inc. provides information and communication technology services. The Company offers telephone, telegraph, domestic and international telecommunication, system development and integration, cloud, global data center, and other related services. NTT serves customers at domestic and overseas.
NTT competitors & similar companies
Frequently asked questions
Where is NTT headquarters?
NTT's headquarters is located at 5-1 Otemachi, Tokyo, Tokyo Prefecture 100-8116, Japan.
How many offices does NTT have?
GraphIQ records 17 locations for NTT across 6+ countries, as of October 2026.
What is NTT's corporate address?
The corporate headquarters address is 5-1 Otemachi, Tokyo, Tokyo Prefecture 100-8116, Japan.
When was NTT founded?
NTT was founded in 1985 and employs approximately 341,321 people.
What is NTT's phone number?
The main phone number for NTT headquarters is +81 3 6838 5111.
How many employees does NTT have?
NTT has approximately 341,321 employees (GraphIQ estimate, 2026).
Is NTT a public company?
Yes. NTT is publicly traded on JPX under the ticker 9432.