Incident report · 2026090510
INDIGO-West: 2.66× baseline latency
Resolved · 7d 0h
What we measured
| Cable | INDIGO-West |
| Segment | Tuas, SG → Perth, AU |
| Detected | 2026-09-05 21:01 UTC |
| Resolved | 2026-09-12 21:02 UTC |
| Duration | 7d 0h |
| Observed latency | 193.4 ms |
| Baseline | 72.8 ms · 2.66× |
| Increase | +161% |
| Severity | warning |
Who is affected
Countries where INDIGO-West comes ashore, how much of their submarine diversity this cable represents, and what our measurements into them show.
| Country | Dependence on this cable | Other submarine cables | What the measurements show |
|---|---|---|---|
| Australia resilience index: 100 · resilient |
1 of 34 cables (3% of submarine diversity) | APX East, Asia Connect Cable-1 (ACC-1), Australia-Japan Cable (AJC) +30 more | median 331 ms today vs 305 ms over 30 days (43 routes) - unchanged |
| Indonesia resilience index: 100 · resilient |
1 of 73 cables (1% of submarine diversity) | Apricot, Asia Connect Cable-1 (ACC-1), Asia United Gateway East (AUG East) +69 more | median 240 ms today vs 232 ms over 30 days (60 routes) - unchanged |
| Singapore resilience index: 78 · resilient |
1 of 46 cables (2% of submarine diversity) | APCN-2, Apricot, Asia Connect Cable-1 (ACC-1) +42 more | median 107 ms today vs 188 ms over 30 days (81 routes) - faster |
Dependence is structural (share of the country's submarine cables), not a traffic share: real traffic distribution across cables is not public.
Timeline
- Alert 2026090510: warning - ratio 2.61x
- Alert #196 improving: 1/3 consecutive OK
- baseline_shift: Alert #196 Perth closed as BASELINE SHIFT after 7+ days: frozen 72.8ms -> new baseline 193.7ms (current 193.4ms). Route changed, not a cable incident.
Detection method
Latency is sampled continuously from our probe network. An alert opens when round-trip time to a monitored endpoint holds above its rolling baseline, and closes automatically once it returns. Full method is described on the methodology page.
How to cite
GeoCables (2026). Incident 2026090510: INDIGO-West. https://geocables.com/incident/2026090510
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