PLDT Domestic Fiber Optic Network (DFON)

PLDT Domestic Fiber Optic Network (DFON) is a domestic submarine cable system within Philippines, linking 13 landing points including Butuan City, Philippines, Cadiz City, Philippines, Cagayan de Oro, Philippines, Calbayog, Philippines and others. It strengthens domestic network resilience in Philippines by providing submarine connectivity between coastal and island communities. GeoCables tracks this cable's health using RIPE Atlas probe measurements, comparing real-time RTT data against baselines to detect performance changes.