Joetsu, Japan

Joetsu, Japan is a submarine cable landing point in Japan (coordinates 37.1478°, 138.2361°). It serves 1 submarine cable system, making it a single-cable landing in Japan's international connectivity infrastructure.

The Joetsu Line is a major railway line in Japan, owned by the East Japan Railway Company. It connects Takasaki Station in Gunma Prefecture with Miyauchi Station in Niigata Prefecture, linking the northwestern Kanto region and the Sea of Japan coast of the Chūbu region. The name refers to the old provinces of Kōzuke (上野) and Echigo (越後), which the line connects. Wikipedia

Connected submarine cables

Connectivity profile

From Joetsu, Japan, international traffic can reach 1 countries through 1 cable system. Destinations include Russia. This location depends on a single cable system — a characteristic that makes it strategically sensitive to physical disruptions.

Monitoring status

No monitoring incidents were recorded on cables serving Joetsu, Japan in the past 90 days — all connected systems remained within normal latency thresholds. Our monitoring network continuously samples latency from external probes to targets reachable via these cables.

About the cables

• Russia-Japan Cable Network (RJCN) (2008) — Russia-Japan Cable Network (RJCN) is a point-to-point submarine cable linking Japan and Russia. Landing at Joetsu, Nahodka, it provides a direct fiber-optic path between the two countries, serving as both a primary data route and a redundancy option for neighboring cable systems. Read more →

Submarine cable data from TeleGeography. Geographic context from Wikipedia. Monitoring metrics updated continuously by GeoCables.