Network Pulse

A magnitude 4.5 earthquake occurred on June 12, 2026, approximately 6 km southeast of Pangyan, Philippines. The event is located within a radius of 350km from several submarine cables with landing points in the region.

Our monitoring indicates that four submarine cables - Apricot, Asia Connect Cable-1 (ACC-1), Bifrost, and SEA-US - are potentially affected by the seismic activity. These cables land at Davao, Philippines, which is 163km from the epicenter. We have observed latency anomalies in these cables: Apricot has an average latency of ~160ms with 11 checks over a week, ACC-1 shows ~226ms with 92 checks, and Bifrost measures ~204ms with 41 checks. SEA-US also reports similar latency issues at ~203ms with 11 checks. The other cables in the vicinity - Palapa Ring Middle, PLDT Domestic Fiber Optic Network (DFON), Converge Domestic Submarine Cable Network (CDSCN), and Philippine Domestic Submarine Cable Network (PDSCN) - are not actively measured for latency changes due to their greater distance from the earthquake's epicenter.

A magnitude 4.5 earthquake occurred on June 11, 2026, approximately 85 km south of Pýrgos, Greece. This event is within a range that could potentially impact submarine cable networks.

Our monitoring indicates that the 2Africa and India Europe Xpress (IEX) cables, which both land at Tympaki, Greece, are in close proximity to the earthquake's epicenter, being about 98 km away. Latency measurements for these cables show an average of ~189ms with 140 checks over seven days for 2Africa and ~134ms with 11 checks over seven days for IEX. No active alerts are currently in place, but we continue to monitor the situation closely.

On June 11, 2026, a M5.5 earthquake occurred approximately 58 km south of Sarangani, Philippines. Our monitoring currently shows no active alerts on the network but has identified one latency anomaly.

The affected submarine cables with landing points within 350km include Apricot, Asia Connect Cable-1 (ACC-1), Bifrost, and SEA-US, all landing at Davao, Philippines, which are approximately 246km from the earthquake's epicenter. Latency measurements show an average increase of about 140ms for Apricot, 181ms for ACC-1, 203ms for Bifrost, and 201ms for SEA-US over a period of seven days. These figures reflect potential impacts on network performance but do not indicate any active damage or outages.

On June 10, 2026, a M4.6 earthquake occurred approximately 25 km ENE of Sibolga, Indonesia.

The affected submarine cables within 350km include SeaMeWe-5 and the Indonesia Global Gateway (IGG) System, both landing at Dumai, Indonesia, which are 276km from the event. Our latency measurements show that SeaMeWe-5 has an average latency of ~252ms with 5 checks per week, while the IGG System has an average latency of ~78ms with 30 checks per week. No active alerts have been triggered, and there is no evidence of damage or significant impact on these cables based on current monitoring.

On June 10, 2026, a magnitude 5 earthquake struck approximately 21 km southwest of Balangonan, Philippines. This event is located within 350km of several submarine cables, including the Apricot, Asia Connect Cable-1 (ACC-1), Bifrost, and SEA-US cables, which all land at Davao, Philippines.

Our latency monitoring indicates that these cables have experienced minor anomalies. Specifically, the average latency for the Apricot cable has increased by approximately 139ms over a period of seven days, while ACC-1 shows an increase of about 179ms. The Bifrost and SEA-US cables have seen increases of around 202ms and 201ms respectively. No active alerts are currently in place, indicating that the impact on these cables is minimal.

A magnitude 4.71 earthquake occurred on June 10, 2026, approximately 23 km east of Pāpa‘ikou, Hawaii. The seismic event is located within a radius of 350km from several submarine cables that serve the Hawaiian Islands.

Our monitoring indicates latency anomalies for the Southern Cross Cable Network (SCCN), which has a landing point at Spencer Beach, HI, approximately 103 km from the earthquake's epicenter. The average latency increase measured is around 172ms with about 56 checks over seven days. Other cables in the vicinity, such as the Hawaiian Islands Fiber Link (HIFL) and Hawaii Inter-Island Cable System (HICS), are not actively monitored but could potentially be affected based on their proximity to the earthquake. For now, no active alerts have been triggered for these or other nearby submarine cables.