RETN adds Kaunas–Białystok route to increase cross-border diversity

London - June 24, 2026 - RETN, the leading independent global network service provider, has expanded its European backbone with a new fiber route between Kaunas and Białystok via Suwałki, strengthening route diversity between the Baltic region and Central Europe.

The route links Kaunas, a major aggregation hub for Baltic traffic, with Białystok, a key eastern Polish network node connecting onward to Warsaw and Western European backbone routes. Passing through Suwałki, it traverses one of the principal terrestrial crossings between Lithuania and Poland and a critical gateway between Baltic networks and the wider EU core.

The Kaunas–Suwałki–Białystok axis forms part of the Via Baltica infrastructure corridor, where transport and utility networks converge into a limited number of cross-border routes. This natural concentration of infrastructure increases the importance of additional, independently routed fiber paths to maintain resilient connectivity across the Baltic–Central Europe axis.

Traffic growth across the Baltic–Central Europe axis is being driven by expanding cloud interconnection, hyperscale connectivity and increasing east–west data flows between regional hubs and Western European backbone networks. This is increasing demand for additional physically independent cross-border routing alongside ongoing capacity expansion.

The new Kaunas–Białystok route further strengthens RETN’s broader Nordic–Baltic infrastructure strategy. Together with RETN’s existing route diversity across Sweden, Finland, the Baltic States and Poland, the expansion increases the number of physically independent routing options available across key segments of the Nordic–Baltic corridor, enhancing resilience and routing flexibility between the Nordics and Central and Western Europe.

Tony O’Sullivan, CEO of RETN said: “This new route adds a totally unique physically independent path between Lithuania and Poland across a key cross-border corridor. It is part of our sustained approach to building multiple independent routing options across the Nordic–Baltic region, particularly in areas where geography naturally concentrates infrastructure. The route increases diversity and provides additional resilience options for traffic traversing the Baltic–Central Europe axis.”