Network Pulse

On June 23, 2026, a M5.3 earthquake occurred 126 km south of Isangel, Vanuatu. The event is located in the South Pacific region, close to submarine cable routes.

The Gondwana-1 cable, which lands at Noumea, New Caledonia (approximately 331 km from the epicenter), has shown latency anomalies with an average increase of about 28 milliseconds over seven days. Currently, there are no active alerts on our network for this region.

A magnitude 4.9 earthquake occurred on June 23, 2026, approximately 171 km WNW of Tobelo, Indonesia.

Our monitoring indicates that five submarine cables with landing points within a 350km radius of the event are being observed: Palapa Ring Middle, SEA-US, Asia Connect Cable-1 (ACC-1), Bifrost, and Indonesia Global Gateway (IGG) System. Latency measurements show average delays ranging from approximately 97 to 254 milliseconds for these cables, with varying frequency of checks per week. Currently, there are no active alerts on the network, but we continue to monitor closely.

On June 23, 2026, a M4.6 earthquake occurred approximately 10 km east of Miyakojima, Japan. Our monitoring currently indicates no active alerts on the network but has identified one latency anomaly.

The Asia Submarine-cable Express (ASE) and Cahaya Malaysia cables have landing points within 350km of the epicenter. Specifically, the ASE/Cahaya Malaysia cable lands at Komesu, Japan, which is about 272km from the earthquake's location. Our measurements show an average latency increase of approximately 103ms with seven checks over a week.

On June 22, 2026, a M4.9 earthquake occurred approximately 68 km WNW of Tobelo, Indonesia.

The affected submarine cables within 350km of the event include Palapa Ring Middle, SMPCS Packet-1, SEA-US, Asia Connect Cable-1 (ACC-1), Barat Timur Indonesia-1 (BTI-1), Barat Timur Indonesia-2 (BTI-2), Bifrost, and Indonesia Global Gateway (IGG) System. Our latency measurements show that while there are currently 1 latency anomaly and no active alerts on the network, average latencies have increased slightly for these cables. For instance, Palapa Ring Middle shows an average increase of ~256ms over its baseline with 7-day monitoring, and SEA-US has seen a rise to ~165ms from its normal levels.

On June 21, 2026, a M4.8 earthquake occurred approximately 86 km ENE of Fangale’ounga, Tonga.

The Hawaiki submarine cable, which lands at Neiafu, Tonga (111km from the event), is within our monitored region. Our latency measurements indicate an average latency increase of about 217ms over the past seven days with five checks per day. Currently, there are no active alerts on the network, and we continue to monitor the situation closely.

On June 21, 2026, a M4.7 earthquake occurred approximately 16 km east of Torata, Peru. 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 are South America-1 (SAm-1) and South Pacific Cable System (SPCS)/Mistral, both landing at Arica, Chile. SAm-1 shows an average measured latency of about 181ms with 47 checks over seven days, while SPCS/Mistral displays an average latency of approximately 123ms with 14 checks per week. These measurements indicate potential impact on network performance in the region but do not suggest any significant damage or outages.

A magnitude 4.7 earthquake occurred on June 21, 2026, approximately 80 km southwest of Padang, Indonesia.

Our monitoring does not indicate any submarine cables with landing points within 350 km of the epicenter. Currently, we have recorded 1 latency anomaly but no active alerts on our network in relation to this event. The absence of measured disruptions suggests that the earthquake did not significantly impact the submarine cable systems in the region.

A magnitude 5.2 earthquake occurred on June 20, 2026, approximately 10 km south of Kastrí, Greece. This event is within a radius of 350km from several submarine cables that we monitor.

Our latency measurements indicate potential impacts on the following cables: The 2Africa and India Europe Xpress (IEX) cables, both landing at Tympaki, Greece, are showing an average latency increase of about 254ms and 131ms respectively. Similarly, the Asia Africa Europe-1 (AAE-1), Blue, and MedNautilus Submarine System cables, which land in Chania, Greece, have experienced increases averaging around 224ms, 87ms, and 99ms respectively. These measurements suggest that while there are latency anomalies, no active alerts have been triggered as of the current monitoring period.

On June 19, 2026, a M6.6 earthquake occurred approximately 133 km ESE of Petropavlovsk-Kamchatsky, Russia.

No submarine cables with landing points within 350km of the epicenter are currently monitored by our network. Our latency measurements show no anomalies and one active alert on the network as a result of this event. The impact to the submarine cable network in this region is not measured or reported by us, and we have no information indicating any specific damage to cables.

On June 18, 2026, a M5.3 earthquake occurred approximately 63 km southeast of Bobon, Philippines. Our monitoring currently indicates no latency anomalies but has identified one active alert on the network.

The earthquake is within proximity to several submarine cables with landing points in the region. Specifically, the following cables are affected: Apricot (Davao, Philippines), Asia Connect Cable-1 (ACC-1) (Davao, Philippines), Bifrost (Davao, Philippines), and SEA-US (Davao, Philippines). Our latency measurements show average delays of approximately 199ms to 225ms for these cables. Additionally, the Palapa Ring Middle cable (Melonguane, Indonesia) and two domestic networks—PLDT Domestic Fiber Optic Network and Submarine Cable in the Philippines (both landing at Butuan City, Philippines)—are also within a radius of 300km from the event, with average delays around 256ms to 261ms. The Converge Domestic Submarine Cable Network is located further away but still within our monitored range.