Terralpha, a subsidiary of SNCF Réseau, sovereign infrastructure operator
We operate a secure, ultra-high-speed, ultra-low-latency telecoms network deployed along railway lines, offering operators, businesses and public sector bodies reliable, high-performance data transport services of up to 800Gbps throughout France. This unique rail location is a strategic asset, enabling critical flows to be secured via alternative routes, thus contributing to sovereign connectivity.
We also provide Digital Dalles, land ready to host data centres as close as possible to local needs, reducing latency while optimising energy efficiency.
Terralpha offers

TerraWave - Illuminated fibre
Fast, secure, multi-protocol dedicated connectivity solution between two points on our photonic network

TerraSpectrum - Amplified FON
Neutral and transparent data transport solution for your optical signals through our photonic network

TerraPoP - Accommodation
Solutions for hosting local data centres on our prepared sites or space in our shelters for your equipment
The Terralpha network
With an optical network spanning more than 20,000 km and 6,000 municipalities, Terralpha is helping to reduce the digital divide by deploying ultra-high-speed points of presence in the heart of the country.
- 20,000 km of fibre optic cable across France
- Up to 800 Gb/s throughput
- 2,000 stations
- 110 points of presence

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