State of the Submarine Cables - October 2026
What our distributed measurement network saw in October 2026: every number below comes from our own probes and detectors, and every incident links to its measured timeline.
The month in numbers
- 5 670 313 latency measurements
- 157 793 routes observed
- 24 anomalies detected (3 critical, all investigated and closed)
- 19 cable systems involved
- 53.1 average hours to resolution
Notable incidents
A detected anomaly is not automatically a cable fault: some turn out to be inland routing changes or planned reroutes, and the incident pages say so explicitly.
| Cable | Detected | RTT vs baseline | Outcome |
|---|---|---|---|
| Amitie | 2026-10-20 | 161 -> 695 ms | probe_specific_likely_fp - measured timeline |
| Nigeria Cameroon Submarine Cable System (NCSCS) | 2026-10-06 | 20 -> 1781 ms | insufficient_witness_context - measured timeline |
| Medusa Submarine Cable System | 2026-10-11 | 112 -> 568 ms | insufficient_witness_context - measured timeline |
| Guam Okinawa Kyushu Incheon (GOKI) | 2026-10-07 | 66 -> 139 ms | routing_event_non_cable - measured timeline |
| SJJK | 2026-10-19 | 28 -> 58 ms | routing_event_non_cable - measured timeline |
Latency observatory
Slowest and fastest paths among routes with at least 200 measurements this month (average round-trip time).
Slowest observed paths
| Route | avg RTT, ms |
|---|---|
| Ekaterinburg RU - Moscow RU | 3079 |
| Moldova MD - Зона: Kyiv, Kyiv City AS8772 | 3071 |
| Ekaterinburg RU - Зона: Kyiv, Kyiv City AS8772 | 902 |
| Kyiv UA - Зона: Kyiv, Kyiv City AS8772 | 688 |
| Almaty - FINTEL Suva | 427 |
Fastest observed paths
| Route | avg RTT, ms |
|---|---|
| Odessa UA - Kyiv: Santosha | 6 |
| Odessa UA - Магистраль: Mountain View, California AS15169 | 6 |
| Odessa UA - Опора: Chisinau AS174 | 6 |
| Rostov RU - Объект: | 6 |
| Almaty - RIPE Atlas Probe 7342 KG | 6 |
Month-over-month shifts
Routes whose weighted median moved 15%+ against the previous month (at least 100 samples in both).
| Route | avg RTT, ms |
|---|---|
| Kyiv UA - Kyiv: StarTelecom | 14 -> 92 (+557%, slower) |
| Saint Petersburg RU - Зона: Kyiv, Kyiv City AS25386 | 29 -> 179 (+517%, slower) |
| Kyiv UA - Магистраль: Kyiv, Kyiv City AS35320 | 5 -> 24 (+380%, slower) |
| Odessa UA - Магистраль: Jinrongjie, Beijing AS4837 | 40 -> 138 (+245%, slower) |
| Minsk BY - Объект: Amsterdam, North Holland | 7 -> 23 (+229%, slower) |
| Odessa UA - Магистраль: Kyiv, Kyiv City AS35320 | 10 -> 27 (+170%, slower) |
Method and reuse
Measurements come from GeoCables own distributed probe network; anomaly detection compares live paths against per-route rolling baselines. Reuse freely under CC BY 4.0 with attribution: raw data in the open dataset, programmatic access via the API, push updates via RSS. Live view: the map.
