Why RETN in Sofia matters
RETN (AS9002) is an independent backbone spanning Europe and Eurasia, with strong interconnect presence in Sofia (TELEPOINT Sofia Centre / East, Equinix SO2 and related facilities). For KuzeyDC AS62425, RETN is a high-capacity transit layer that carries Istanbul-origin traffic toward Central and Western European destinations.
Rather than a single “tunnel” to one Western PoP, the Bulgaria path places egress closer to regional peering and wholesale capacity—often improving AS-path length and latency for Eastern Europe, the Balkans and parts of Central Europe.
Capacity, IPv6 and operations
RETN sessions run dual-stack (IPv4/IPv6) with RPKI-aligned filters and community-based traffic engineering. On the NOC side:
- Link utilization and error counters are monitored continuously
- Maintenance windows are planned with customer impact analysis
- Atlantis, Belcloud and local carriers remain available for failover
Practical impact for customer traffic
- Colocation / dedicated: more consistent RTT to European APIs and SaaS
- CDN and content: shorter paths into reachable peering ecosystems via RETN
- Hybrid cloud: a measurable alternative on the Istanbul–Sofia–Frankfurt/Amsterdam chain
RETN Bulgaria connectivity turns KuzeyDC’s carrier-neutral promise into real multi-path engineering—not just a carrier name list. Use NOC or the Networking page for looking-glass and performance discussions.