OTE headquarters details
- City
- Athens
- State / region
- Attica
- Country
- Greece
- Phone
- +30 21 0611 1000
- Founded
- 1949
- Stock
- ASE: HTO
Location map
Open in Google MapsAll OTE office locations
| City | State / region | Country | Type |
|---|---|---|---|
| Athens HQ | Attica | Greece | Headquarters |
Showing the headquarters of 16 recorded locations. See every location in GraphIQ →
About OTE
OTE (ASE: HTO) is headquartered in Athens, Attica, Greece. Founded in 1949, the company has 16 recorded locations across 8+ countries and employs approximately 10,500 people worldwide.
Where is OTE's main office?
OTE's main headquarters office is located at Athens, Attica, Greece. This is the company's primary corporate address.
OTE regional offices
Beyond its headquarters in Athens, OTE has recorded locations in Greece, Australia, Brazil, China, France, Germany, Slovenia and United States.
OTE contact information
The main switchboard for OTE headquarters can be reached at +30 21 0611 1000. Official website: cosmote.gr/cs/otegroup/gr/corp_homepage.html.
What does OTE do?
Hellenic Telecommunications Organization S.A. (OTE Group) is the largest telecommunications and IT company in Greece and a subsidiary of Germany-based Deutsche Telekom. It is also one of the three largest companies listed in the Athens Stock Exchange, according to market capitalization.
OTE competitors & similar companies
Frequently asked questions
Where is OTE headquarters?
OTE's headquarters is located at Athens, Attica, Greece.
How many offices does OTE have?
GraphIQ records 16 locations for OTE across 8+ countries, as of October 2026.
When was OTE founded?
OTE was founded in 1949 and employs approximately 10,500 people.
What is OTE's phone number?
The main phone number for OTE headquarters is +30 21 0611 1000.
How many employees does OTE have?
OTE has approximately 10,500 employees (GraphIQ estimate, 2026).
Is OTE a public company?
Yes. OTE is publicly traded on ASE under the ticker HTO.