Janna

Janna is a domestic submarine cable network within Italy, connecting 4 coastal and island locations including Cagliari, Civitavecchia, Mazara del Vallo, Olbia. The system provides essential telecommunications infrastructure for communities that would otherwise depend entirely on satellite or microwave links. Submarine cables in this region contribute to a mesh of redundant paths that keep internet traffic flowing even when individual systems are damaged or under maintenance. GeoCables maintains health checks on this cable using distributed RIPE Atlas probes, with automated anomaly detection triggered when RTT exceeds 4x the historical baseline.