Network Pulse
Every natural event our monitoring has flagged near a submarine cable - newest first. Each entry shows what happened and whether our latency measurements detected any impact.
M4.9 earthquake · 11 km W of Balangonan, Philippines
On June 15, 2026, a magnitude 4.9 earthquake struck approximately 11 km west of Balangonan, Philippines. Our monitoring currently shows no active alerts on the network but has identified one latency anomaly.
The affected region includes several submarine cables with landing points within 350km of the event. Latency measurements indicate that the Apricot, Asia Connect Cable-1 (ACC-1), Bifrost, and SEA-US cables, all landing at Davao, Philippines, have experienced average latency increases ranging from 177ms to 226ms over a period of seven days. Additionally, the Palapa Ring Middle cable, which lands in Tahuna, Indonesia, about 221km away, shows an increase of approximately 257ms. The PLDT Domestic Fiber Optic Network and Converge Domestic Submarine Cable Network, both landing at Cagayan de Oro, Philippines, have recorded latency increases around 257ms to 261ms, while the Philippine Domestic Submarine Cable Network shows a similar increase of about 260ms. These measurements reflect potential impacts from seismic activity but do not indicate any known cable damage.
M5.5 earthquake · 5 km SSW of Pangyan, Philippines
A magnitude 5.5 earthquake occurred on June 15, 2026, approximately 5 km southwest of Pangyan, Philippines. This event is within a radius of 350km from several submarine cable landing points in the region.
Our monitoring indicates that five cables with landing points near this earthquake have experienced latency anomalies: Apricot, Asia Connect Cable-1 (ACC-1), Bifrost, SEA-US, and PLDT Domestic Fiber Optic Network. The average latency increases range from 177ms to 261ms, as measured over the past week. Additionally, two other cables - Palapa Ring Middle and Converge Domestic Submarine Cable Network (CDSCN) - showed slight anomalies with average latencies around 257ms, though they are further away from the epicenter.
M6.2 earthquake · 67 km ESE of Pondaguitan, Philippines
A magnitude 6.2 earthquake struck approximately 67 km ESE of Pondaguitan, Philippines, on June 15, 2026.
Our monitoring indicates that several submarine cables within a 350km radius are potentially affected by this seismic event. Specifically, the Apricot, Asia Connect Cable-1 (ACC-1), Bifrost, and SEA-US cables, which all land at Davao, Philippines, have shown latency anomalies with average increases of around 175ms to 226ms over a period of seven days. Additionally, the Palapa Ring Middle cable, landing in Melonguane, Indonesia, approximately 239km from the epicenter, has reported an increase of about 257ms latency. The SCiP and CDSCN cables, both landing at Butuan City, Philippines, around 335km away, have also experienced similar delays with an average latency increase of 261ms.
M4.5 earthquake · 34 km NNE of Komodo, Indonesia
The submarine cable network remains stable with 1766 latency checks conducted over the last 24 hours showing no anomalies and zero active alerts. The network continues to operate smoothly without any disruptions. A recent seismic event on June 15, 2026, near Komodo, Indonesia (M4.5 earthquake, 34 km NNE of the island), did not impact our monitored cables within a 350km radius. All relevant submarine cables are currently functioning normally as indicated by our latency measurements, which show no changes from baseline performance.
M5.1 earthquake · 27 km SE of Magdalena, Philippines
The submarine cable network remains stable with no anomalies detected over the last 24 hours from our 1739 latency checks across 648 cables. The network continues to operate without any issues or active alerts.
On June 14, 2026, a M5.1 earthquake occurred near Magdalena, Philippines, approximately 27 km southeast of the event's epicenter. All submarine cables within 350km of this seismic activity are currently operating normally, with our latency measurements showing no impact from the event. The cables in range - such as the Palawan-Iloilo Cable System and National Digital Transmission Network (NDTN) - are all functioning as expected without any changes to their performance.
M5.2 earthquake · 53 km ENE of Hinatuan, Philippines
The submarine cable network remains stable with 1767 latency checks conducted over the past 24 hours revealing no anomalies and zero active alerts. This indicates that the network is operating smoothly across all monitored cables.
On June 14, 2026, a M5.2 earthquake occurred near Hinatuan, Philippines, impacting several cables in the region. However, our latency measurements show that the submarine cables with landing points within 350km of the event are functioning normally and have shown no impact from the seismic activity.
M4.8 earthquake · 6 km ESE of Butulan, Philippines
The submarine cable network remains stable with 1760 latency checks conducted over the last 24 hours revealing no anomalies and zero active alerts. This ensures that data flows smoothly across our global network.
As for recent seismic activity, a M4.8 earthquake occurred on June 14, 2026, near Butulan, Philippines. The submarine cables within a 350km radius of this event are operating normally, as indicated by our latency measurements which show no impact from the earthquake.
M4.6 earthquake · 52 km NE of Santa Marina Salina, Italy
Our submarine cable network remains stable with no anomalies detected over the past 24 hours from 1833 latency checks across 648 cables. The network continues to operate smoothly without any active alerts or disruptions.
The recent M4.6 earthquake on June 13, 2026, near Santa Marina Salina, Italy, had a range of 52 km NE from the affected area. All submarine cables within 350km of this event are currently operating normally, as confirmed by our latency measurements which show no impact on their performance.
M4.5 earthquake · 75 km E of Hualien City, Taiwan
The submarine cable network remains stable, with 1844 latency checks conducted over the past 24 hours revealing no anomalies and zero active alerts. This indicates that the network is currently operating without any disruptions or issues.
As a point of reference, a M4.5 earthquake occurred on June 13, 2026, approximately 75 km east of Hualien City, Taiwan. All submarine cables with landing points within 350km of this event are functioning normally, as confirmed by our latency measurements which show no impact from the seismic activity.
M5.2 earthquake · 2 km WSW of Kablalan, Philippines
The submarine cable network remains stable with no anomalies detected over the past 24 hours from our 1842 latency checks across 647 cables. This confirms that the network is operating without issues.
On June 13, 2026, a M5.2 earthquake occurred near Kablalan, Philippines, within proximity to some of our monitored submarine cables. Despite this seismic event, all relevant cables with landing points within 350km are functioning normally and show no impact in our latency measurements.
M5 earthquake · 30 km SSW of Daliao, Philippines
The submarine cable network remains stable with 1876 latency checks conducted over the past 24 hours revealing no anomalies and zero active alerts. This ensures that data flows smoothly across our global network.
Contextually, a M5 earthquake occurred on June 12, 2026, near Daliao, Philippines. The cables with landing points within 350km of the event are operating normally, as indicated by our latency measurements which show no impact from the seismic activity.
M4.5 earthquake · 6 km SSE of Pangyan, Philippines
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.