Smart Cable Routing
Dijkstra-based routing through real submarine cables and landing points from the industry cable inventory. Accurate distance multipliers for land and undersea segments.
In-depth analysis of how internet traffic moves through 728 submarine cable systems, based on real measurements from our probes worldwide.
On November 2, 2026, a magnitude 5.1 earthquake occurred 19 km west-northwest of Tomohon, Indonesia. The event impacted a region with a significant population and infrastructure presence. Authorities responded promptly, utilizing real-time notifications and data feeds to assess and manage the situation. The earthquake's effects were localized, and its duration was relatively brief, with monitoring systems providing continuous updates throughout the event.
The submarine cable systems in the vicinity demonstrated remarkable resilience. Key systems such as the Asia Connect Cable-1 (ACC-1) and Indonesia Global Gateway (IGG) System, both landing at Manado, Indonesia (24 km from the earthquake's epicenter), maintained their typical performance levels during the event. ACC-1 held an average latency of ~196ms, while IGG consistently measured ~64ms, ensuring uninterrupted connectivity across their routes. These cables, along with others like the Barat Timur Indonesia-2 (BTI-2), continued to support stable traffic flow, underscoring the robustness of the infrastructure in this region.
Monitoring of these cable corridors remains active in real time, with 2222 latency checks conducted in the past 24 hours across the 725 systems we oversee. This ongoing vigilance ensures the reliability and stability of global submarine networks.
The network remained in excellent health today with no anomalies or active alerts detected across 663 submarine cables during 2190 latency/route checks. This quiet day underscores the robustness and stability of our global cable infrastructure.
Notable fluctuations were observed on several cables, including the Concerto, i2i Cable Network (i2icn), Tata TGN-Tata Indicom, MIST, Kanawa, Russia-Japan Cable Network (RJCN), SeaMeWe-6, SMPCS Packet-2, and Deep Blue One. These changes in latency ranged from a 134% increase on Concerto to a 20% decrease on SMPCS Packet-2, reflecting normal network jitter rather than any significant incidents or damage.
All cable incidents, each with its own report →
Monthly report from GeoCables own measurements: 24 cable anomalies detected (3 critical), 5 670 313 latency measurements across 157793 routes. Verdicts, timelines, slowest and fastest observed paths.
The magnitude 6 earthquake in Vanuatu did not affect the operation of submarine cables Tamtam and ICN1. The infrastructure held up to the shock.
Floods in Egypt caused anomalies on several submarine cables, including Hawk, EIG, and MENA. Analysis of data and further monitoring.
The 6.2 magnitude earthquake in Vanuatu did not affect the operation of submarine cables Tamtam and ICN1. The infrastructure held up to the shock.
Magnitude 4.7 earthquake near Asahi, Japan, caused anomalies in the operation of EAC-C2C, TPE, and NCP cables. Analysis of data and further monitoring.
A 6-magnitude earthquake occurred 214 km northwest of Port-Olri, Vanuatu. The submarine cable Tamtam withstood the tremor.
Why did the signal travel around the globe, tripling the delay? We dive into the details.
Magnitude 6.5 earthquake off the Bonin Islands on October 25, 2026. The Ogasawara cable withstood the shock, and service remains stable.
| Point A | - |
|---|---|
| Point B | - |
| Coordinates A | - |
| Coordinates B | - |
| Cable Multiplier | - |
| Crosses Ocean | - |
| Route Details | - |
| Data Source | - |
Dijkstra-based routing through real submarine cables and landing points from the industry cable inventory. Accurate distance multipliers for land and undersea segments.
Interactive map showing every cable your data touches - backbone nodes, landing stations, and submarine segments with real geographic coordinates.
Launch real network measurements from probes worldwide. Compare theoretical estimates with actual RTT and hop-by-hop packet journeys with ISP geolocation.
Speed-of-light physics combined with cable distance to estimate latency. See the real-world overhead - how much slower actual routing is vs fiber limits.
Enter cities, IP addresses, or domain names - everything is resolved to coordinates with hosting location identification and optimal cable route.
Traceroute hops enriched with city, country, ISP. Phases auto-detected: local → ISP → CDN → backbone → submarine cable. Visual RTT timelines.
City names, IP addresses, or domains. The system resolves coordinates, identifies countries, and determines whether the route crosses oceans.
A graph algorithm finds the optimal route through landing points and submarine cables with accurate distance multipliers for each segment type.
One click launches our own measurement network for real ping and traceroute. See actual RTT, identify every router, and find where your packet enters submarine cables.
Validate routing assumptions, estimate latency budgets, troubleshoot unexpected paths.
Understand your ping. Compare the physical speed limit vs reality for any server.
Choose optimal PoP locations based on submarine cable topology and landing proximity.
Teach how the physical internet works. Visualize the gap between light speed and real routing.
Over 500 submarine cable systems span the world's oceans, with a combined length of approximately 1.4 million kilometers - enough to circle the Earth 35 times.
Submarine cables carry over 99% of intercontinental data traffic. Despite what many people think, satellites handle only a tiny fraction of global internet traffic.
Light travels through fiber optic cable at about two-thirds the speed of light in vacuum. A signal from London to New York takes approximately 28 milliseconds one way.
Modern submarine cables are designed to last 25 years. Cables are buried in the seabed near shores and laid directly on the ocean floor in deep water, protected by layers of steel and polyethylene.
The deepest submarine cables reach the abyssal plains at nearly 8,000 meters. At these depths, cables rest on the ocean floor under enormous pressure, beyond the reach of anchors and fishing gear.
Major transoceanic cable projects like 2Africa or PEACE cost over $1 billion. Investment comes from tech giants like Google, Meta, and Microsoft, as well as telecom consortiums.
GeoCables is a research publication on the physical infrastructure of the global internet. We publish in-depth analyses of how data actually travels between countries - which submarine cables are used, what the measured latency is, and why it differs from the theoretical minimum.
Our research is grounded in real measurements from our own distributed network of measurement servers. We trace specific routes across 728 submarine cable systems and 1,900+ landing points in the global cable inventory, then publish what we find.
Light through fiber travels at ~200,000 km/s - about two-thirds the speed of light in vacuum. That sets the theoretical floor for round-trip time. In practice, real RTT is 1.5-4× higher due to routing detours, optical amplifiers, protocol processing, peering between networks, and suboptimal path selection. Our research articles document this overhead on specific routes - measuring it, explaining it, and tracing it back to the cables and networks responsible.
We run our own measurement network worldwide and watch in real time how traffic moves through submarine cables: where latency climbs, where links drop, what is happening right now. Open the live map to see network health and where it is noisy.