GNM has completed a key infrastructure upgrade across its European backbone - extending our high-capacity DWDM network from Sweden to the Balkans via fully diverse optical paths.

Our node in Kista (Sweden) has undergone a major hardware and rack-level upgrade, completing the modernization of the Frankfurt–Kista corridor. This unlocks more bandwidth, lowers power consumption, and enhances operational flexibility in Northern Europe.

At the same time, GNM has launched a new dual-path DWDM route from Bratislava to Sofia:

• One path via Serbia (Belgrade)
• One via Romania

These routes converge in Sofia, forming a robust, high-capacity corridor between Kista and Sofia - bridging Scandinavia, Central Europe, and the Balkans with next-generation optical infrastructure.

Expanding South: Why Sofia Matters for Optical Growth

Sofia is more than just the end-point of this transport extension - it is a strategic aggregation and transit hub for Southeastern Europe. Located at the crossroads of key international systems, it connects traffic from:

• Turkey
• The Middle East
• The Caucasus
• And the broader Balkan region

From Sofia, traffic flows efficiently toward Central and Northern Europe via GNM’s backbone, creating new opportunities for regional carriers, CDNs, and cloud providers looking for scalable, low-latency paths with robust SLAs.

What This Means for Our Customers

This expansion reflects GNM’s long-term strategy to deliver scalable, resilient, and energy-efficient optical infrastructure — empowering operators and platforms across multiple regions.

Key Technical Gains:

• Increased Capacity along the North–Southeast axis
• Redundant Paths via Serbia and Romania for better failover
• Lower Latency through optimized routing
• Higher Energy Efficiency at the Kista node
• 100G+ interfaces and ready-to-scale λ-services

Benefits in Practice:

• Enhanced SLA guarantees on Layer 1/2 services
• Shorter transit paths for traffic from the Balkans and the Middle East
• Strategic access point for growing demand in Southeastern Europe

At GNM, we continue building our backbone as a platform for a transparent, scalable, and high-performance internet - connecting regions and continents with resilience, speed, and clarity.

Need diverse and low-latency transport between Scandinavia and Southeastern Europe?

Let’s talk: sales@gnm.net