Ultra-high-speed broadband at the heart of the regions

Terralpha, a subsidiary of SNCF Réseau, is deploying secure, ultra-high-speed, low-latency points of presence throughout France for businesses, public bodies and operators.


Terralpha provides all professionals with ultra high-speed solutions tailored to their business challenges: performance, security, sovereignty and enhanced customer experience. Terralpha's unique nationwide network, combined with its full ownership of the railway arteries, gives it unprecedented resilience, security and sovereignty.

To meet the emerging needs of Edge Computing and to facilitate the development of regional data centres, Terralpha offers hosting solutions called Digital tiles, enabling the installation of DataCenters for Telecom and Edge operators.

Terralpha in less than a minute

Our offers

Terrawave Ultra Broadband

Private network on wavelengths
10 to 400 Gb/s

Digital tiles

Space for the installation of DataCenters on railway rights-of-way 

Our customers

More details


Hosting companies


Public sector


Building together
the high-speed train for data.

The Terralpha network

With an optical network spanning more than 20,000 km and crossing
6,000 communities, Terralpha is helping to reduce the digital divide by
digital divide by deploying UHD points of presence at people's doorsteps.

20,000 km

of optical fibres in France

400 Gb/s

flexible flow

2 000



cities covered

Our latest news

PressEventsNews Terralpha
November 24, 2023

Etix Everywhere joins forces with Terralpha to strengthen France's digital infrastructure

Lille, Thursday 23 November - Etix Everywhere, a major player in the data centre sector, is celebrating...
News Terralpha
June 20, 2023

Nokia and Terralpha accelerate territorial coverage by deploying a DWDM optical network along railway lines

Paris, France - Nokia has been selected by Terralpha (a subsidiary of SNCF Réseau) to deploy...
April 27, 2023

Terralpha continues its roll-out in 2023

After a 2022 focused on the development of ultra-high-speed points of presence...

Our partners

Terralpha, an SNCF Réseau subsidiary, is deploying
secure, ultra-high-speed, low-latency presence
throughout France.