Who is TOP-IX?
TOP-IX is a neutral, non-profit Internet exchange point based in Turin, Italy, that enables network operators to exchange IP traffic directly through settlement-free peering.
- Neutral Internet exchange point for settlement-free peering
- Layer 2 Ethernet switching fabric for member interconnection
- BGP route server services for IPv4 and IPv6 traffic exchange
- Interconnection services for members within regional data center facilities
- Peering support for internet service providers, content providers, and public sector networks
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More About TOP-IX
TOP-IX operates as a membership-based exchange point in the Turin metropolitan area, where internet service providers, content delivery networks, enterprises, and public administration networks connect to a shared switching platform. Members establish bilateral or multilateral peering sessions across the fabric, which reduces reliance on transit providers for regional traffic and can shorten the path between networks that serve the same user base. Positioning as a neutral facility means no single carrier controls the exchange, which supports open peering policies among participants.
From an architecture standpoint, the exchange relies on a layer 2 Ethernet switching infrastructure to which member routers attach through standard ports. Route exchange typically uses the Border Gateway Protocol (BGP), with optional route server services that simplify multilateral peering by allowing members to announce prefixes through a single session. Support for both IPv4 and IPv6 addresses is central to dual-stack operations, and monitoring of the fabric relies on standard traffic telemetry methods used across peering operations.
The business and technical significance of such an exchange lies in latency reduction, improved resilience, and lower operating costs for network operators. Keeping local traffic local also supports data sovereignty considerations for public sector and regulated organizations that prefer domestic routing. Comparable solution categories include other European Internet exchange points, such as those operated by national and regional associations, which share the same peering fundamentals but differ in membership models, geographic reach, and fabric design.
In directory terms, TOP-IX sits within the data center infrastructure and interconnection segment, specifically the internet exchange point category, where it complements cloud on-ramp, colocation, and network interconnection offerings. Its current activity centers on peering services for its membership base rather than on end-user products, and organizations evaluating it typically assess port options, routing policies, and facility location relative to their own network footprint.
Our description of TOP-IX. Updated October 2026.