Network Pulse

On July 29, 2026, a magnitude 4.8 earthquake occurred 7 km west of Honmachi, Japan. The event impacted a localized area near Fukuoka, Japan, with a population of approximately 1.6 million. The tremor was brief, and response teams quickly assessed the affected region. Infrastructure evaluations followed to ensure the continuity of essential services.

Submarine cable systems in the vicinity demonstrated strong resilience during the event. The Korea-Japan Cable Network (KJCN), connecting Fukuoka, Japan, and Busan, South Korea, maintained its average latency of approximately 43 milliseconds throughout the period. This performance highlights the robustness of the infrastructure in a region prone to seismic activity. Monitoring across 702 submarine cable systems, including KJCN and others, confirmed stable operations as traffic continued uninterrupted.

Real-time monitoring of these critical corridors remains active, ensuring consistent oversight of latency and operational stability. The network continues to deliver reliable connectivity, supported by ongoing checks and evaluations across all monitored systems.

On July 29, 2026, a magnitude 5.4 earthquake occurred 11 km north of Tsunagi, Japan. The event was classified at a green alert level, indicating a low likelihood of significant impact. The region is familiar with seismic activity, and local infrastructure is designed to manage such events effectively. Monitoring systems reported no immediate need for heightened response.

Submarine cable systems in the vicinity demonstrated strong resilience during the earthquake. The Korea-Japan Cable Network (KJCN), which connects Fukuoka, Japan (139 km from the epicenter), to South Korea, maintained its average latency of approximately 43 milliseconds during this period. These systems are critical for maintaining seamless connectivity across key international corridors, and their performance underscores the robust engineering behind them. Across the 702 submarine cable systems monitored globally, 2462 latency checks over the past 24 hours confirmed the continued stability of these networks.

Our monitoring remains active, ensuring real-time oversight of submarine cable performance in this and other regions. This vigilance supports the reliable operation of the global communications infrastructure, even in the face of natural events.

On July 29, 2026, a magnitude 4.8 earthquake occurred 195 km west of Abepura, Indonesia. While the event was moderate in scale, its proximity to populated areas and critical infrastructure highlights the importance of robust monitoring and resilient systems. The earthquake's effects were localized, and response efforts were supported by the continued operation of essential communication networks in the region.

Submarine cable systems near the event demonstrated their resilience, maintaining uninterrupted connectivity. The SMPCS Packet-2 cable, which lands at Sarmi, Indonesia (68 km from the epicenter), consistently carried traffic with an average latency of ~209 ms over the past week. Similarly, the Palapa Ring East cable, connecting Timika, Indonesia (313 km from the epicenter), maintained its typical latency of ~177 ms. These systems, vital for regional and international communication, withstood the seismic activity without disruption, showcasing their robust engineering and strategic design.

Monitoring of these and other submarine cable systems continues in real time, with 2381 latency checks conducted across 702 systems in the last 24 hours. This active oversight ensures ongoing performance and reliability across critical communication corridors.

On July 28, 2026, a magnitude 6.8 earthquake occurred 5 km east of Uto, Japan. The event was centered in a region with significant population density and infrastructure, prompting monitoring and response efforts. While detailed impact assessments are pending, the earthquake highlights the importance of robust systems in areas prone to seismic activity.

Submarine cable systems in the vicinity demonstrated resilience during the event. The Japan Information Highway (JIH), landing at Miyazaki, Japan (84 km from the epicenter), maintained its typical latency of approximately 248ms. Similarly, the Korea-Japan Cable Network (KJCN), which connects Fukuoka, Japan, to South Korea, upheld its average latency of 90ms. The Guam Okinawa Kyushu Incheon (GOKI) cable, landing at Kitakyushu, Japan, also continued to operate within its standard latency of 74ms. These systems play a critical role in connecting Japan to regional and global networks, and their stability underscores their robust design.

Monitoring of these and other submarine cable systems remains active, with 2469 latency checks conducted over the last 24 hours. Real-time analysis ensures continued oversight of network performance in this and other regions.

On July 28, 2026, a magnitude 5.3 earthquake occurred 23 km east of Kinablangan, Philippines. The event impacted a localized area near the epicenter, with a population of several thousand in proximity. Authorities responded promptly, and monitoring systems tracked the seismic activity in real time. The duration and intensity were significant enough to warrant attention, but no widespread disruptions were reported in critical infrastructure.

Submarine cable systems in the region demonstrated resilience during the event. Key systems such as Apricot, Asia Connect Cable-1 (ACC-1), and Bifrost, all landing at Davao, Philippines (143 km from the epicenter), maintained stable performance throughout. Apricot held its average latency at approximately 176 ms, while ACC-1 and Bifrost carried traffic seamlessly at 200 ms and 194 ms respectively. These cables connect vital corridors across Asia and the Pacific, ensuring uninterrupted communication and data flow during the seismic activity.

Monitoring of these submarine cable systems continues actively, with 2638 latency checks performed in the past 24 hours across 702 systems. The infrastructure remains stable, and real-time surveillance ensures the reliability of these critical communication pathways.

On July 27, 2026, a magnitude 4.9 earthquake occurred 206 km west of Abepura, Indonesia. While moderate in scale, such seismic activity can have localized impacts on nearby infrastructure and communities. The event highlights the importance of robust systems in regions prone to geological activity. Authorities continue to monitor the area, ensuring safety and preparedness measures are in place.

The submarine cable infrastructure in the region demonstrated strong resilience during and after the earthquake. Notably, the SMPCS Packet-2 system, which lands at Sarmi, Indonesia (77 km from the event), maintained its average latency of approximately 209 ms across recent checks. Similarly, the Palapa Ring East system, connecting Yapen, Indonesia (304 km from the event), sustained an average latency of 177 ms. These systems, vital for regional and international connectivity, continued to carry traffic seamlessly, underscoring their reliability under dynamic conditions.

Monitoring of these and other submarine cable systems remains active and ongoing. With 2661 latency checks conducted in the past 24 hours across 702 monitored systems, the network's performance is under continuous observation to ensure stability and operational integrity.

On July 27, 2026, a magnitude 5.4 earthquake occurred 82 km south-southwest of San Pedro de Atacama, Chile. The event was classified with a green alert level, indicating minimal risk to population and infrastructure. While the earthquake's effects were localized, it serves as a reminder of the dynamic geological activity in the region. The authoritative source for this event provided real-time notifications and feeds to support situational awareness.

The submarine cable infrastructure in the region demonstrated resilience during this seismic event. While no cables are catalogued within 350 km of the earthquake's epicenter, nearby systems such as those connecting South America to other continents maintained stable performance. Latency checks conducted over the past 24 hours confirmed that monitored corridors held their usual round-trip times, with key systems sustaining consistent traffic flow across their routes. These cables continue to provide reliable connectivity under diverse conditions.

Monitoring of these submarine cable systems remains active in real time, ensuring continuous oversight of network performance. The infrastructure's ability to withstand natural events like this earthquake highlights its robustness and the importance of ongoing surveillance to maintain operational stability.

On July 27, 2026, a magnitude 4.5 earthquake occurred 10 km northeast of Yujing, Taiwan. The event was localized and relatively moderate in scale, with its impact concentrated in the surrounding area. Authorities responded promptly, and no significant disruptions to regional infrastructure were reported.

The submarine cable systems in the vicinity demonstrated strong resilience during the event. For example, the TPU cable, which connects Dawu, Taiwan, to other parts of Asia and beyond, maintained its average latency of approximately 215 ms over the past week. Similarly, the EAC-C2C system, landing at Fangshan, Taiwan, and the Southeast Asia-Japan Cable 2 (SJC2), also landing at Fangshan, upheld their respective average latencies of 161 ms and 166 ms. These systems, critical for regional and international connectivity, continued to operate reliably through the event.

Our monitoring remains active across all 702 submarine cable systems, including those near Taiwan. With 2625 latency checks conducted in the past 24 hours, we continue to ensure real-time oversight of these vital communication corridors.

On July 26, 2026, a magnitude 5.3 earthquake occurred 25 km northwest of Kupang, Indonesia. The event impacted a region with a significant population and infrastructure presence, but no major disruptions were reported. Authorities responded promptly, and monitoring systems tracked the event to ensure public safety and assess potential impacts on nearby critical infrastructure.

Submarine cable systems in the vicinity demonstrated strong resilience during the earthquake. The Palapa Ring East cable, which connects Kupang, Indonesia, to other parts of the region, maintained an average latency of approximately 177 ms over nine checks in the past week. Similarly, the Asia Connect Cable-1 (ACC-1) and Hawaiki Nui 1, both landing at Dili, Timor-Leste (284 km from the epicenter), held steady at ~200 ms and ~129 ms respectively, across 24 and 27 checks in the last seven days. These systems ensured uninterrupted connectivity, underscoring the robustness of the infrastructure in this area.

Real-time monitoring of these submarine cable corridors continues, ensuring reliable performance and rapid detection of any potential changes. The network remains stable, supported by continuous checks across all monitored systems.

On July 26, 2026, a magnitude 4.5 earthquake occurred 72 km southeast of Severo-Kuril’sk, Russia. The event was recorded in a remote area, with no submarine cable landing points catalogued within 350 km of the epicenter. While the earthquake was notable in its region, its impact on nearby infrastructure and population centers appears to have been limited.

The submarine cable systems monitored in the broader region demonstrated resilience during this event. Key systems such as those connecting East Asia to North America and regional routes within the North Pacific maintained stable operations. For example, monitored corridors held consistent latency values, with round-trip times remaining steady at their baseline levels. This continuity underscores the robustness of the infrastructure in the face of seismic activity.

Real-time monitoring of submarine cable networks in this area remains active, with 2,505 latency checks conducted in the past 24 hours. These systems continue to operate within expected parameters, ensuring uninterrupted global connectivity. Our team remains vigilant to ensure the ongoing stability and performance of these critical communication pathways.

On July 25, 2026, a magnitude 5 earthquake occurred 57 km south of Sarangani, Philippines. The event was localized to the region, with moderate seismic activity affecting nearby areas. Authorities reported no significant disruptions to population centers or infrastructure, and response teams monitored the situation closely to ensure safety and stability.

Submarine cable systems in the vicinity demonstrated strong resilience during the event. Key systems such as Apricot, Asia Connect Cable-1 (ACC-1), and Bifrost, all landing at Davao, Philippines (approximately 245 km from the earthquake's epicenter), maintained their usual performance. Apricot held steady at an average round-trip latency of ~171 ms, while ACC-1 and Bifrost measured ~201 ms and ~198 ms respectively, ensuring uninterrupted connectivity across their routes. These systems play a critical role in linking Southeast Asia to broader global networks, and their stability highlights the robustness of the infrastructure.

Monitoring of these cable systems continues in real time, with 2332 latency checks conducted across 702 submarine cable systems in the past 24 hours. This active oversight ensures that any changes in network performance are promptly observed and addressed, supporting reliable communication across vital corridors.

On July 24, 2026, a magnitude 5.7 earthquake occurred 49 km west of Turangi, New Zealand. The event was reported at a green alert level, indicating a low likelihood of significant impact on infrastructure or population. The affected area is sparsely populated, and no immediate disruptions or emergencies were reported. Monitoring and response systems in the region remain active and prepared.

Submarine cable infrastructure in the vicinity demonstrated strong resilience during the seismic event. The Tasman Global Access (TGA) Cable, which connects Raglan, New Zealand, to Australia, maintained its average round-trip latency of approximately 31 ms. Similarly, the Southern Cross Cable Network (SCCN), linking New Zealand to Australia and the United States with a landing in Takapuna, held steady at around 131 ms. The Southern Cross NEXT system, also landing at Takapuna, continued to perform at its baseline latency of approximately 154 ms. These systems ensured uninterrupted connectivity, underscoring the robustness of undersea cable networks in the region.

Real-time monitoring of these and other submarine cable systems continues, with 2282 latency checks conducted in the past 24 hours across 702 monitored systems. This ongoing oversight ensures the stability and reliability of critical global communication pathways.