Malaysia-Cambodia-Thailand (MCT) Cable: latency up to 2.1× normal, 19 Oct 2026
What we measured
| Cable | Malaysia-Cambodia-Thailand (MCT) Cable |
| Segment | Rayong, TH | Minsk, BY | Sydney, AU → Cherating, MY |
| Detected | 2026-10-19 15:03 UTC |
| Resolved | 2026-10-19 17:02 UTC |
| Duration | 1h 59m |
| Observed latency | 212.6 ms |
| Baseline | 132.9 ms · 2.09× |
| Increase | +205% |
| Severity | warning |
Who is affected
Countries where Malaysia-Cambodia-Thailand (MCT) Cable 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 |
|---|---|---|---|
| Cambodia resilience index: 37 · vulnerable |
1 of 3 cables (33% of submarine diversity) | Asia Africa Europe-1 (AAE-1), Sihanoukville-Hong Kong (SHV-HK) | average 69 ms over 30 days |
| Malaysia resilience index: 100 · resilient |
1 of 34 cables (3% of submarine diversity) | APCN-2, Asia Africa Europe-1 (AAE-1), Asia Link Cable (ALC) +30 more | median 221 ms today vs 181 ms over 30 days (47 routes) - slower |
| Thailand resilience index: 100 · resilient |
1 of 18 cables (6% of submarine diversity) | Asia Africa Europe-1 (AAE-1), Asia Direct Cable (ADC), Asia Pacific Gateway (APG) +14 more | median 207 ms today vs 214 ms over 30 days (166 routes) - unchanged |
Dependence is structural (share of the country's submarine cables), not a traffic share: real traffic distribution across cables is not public.
Path analysis
Traffic changed route and the original path stopped responding. This is the pattern a real cable break produces.
Cross-probe verdict. Too few independent vantage points were watching this endpoint to reach a cross-probe verdict.
Timeline
- Alert 2026101901: warning - ratio 2.09x
- Alert #231 resolved: RTT 212.58ms (baseline 132.92ms), 5 consecutive OK
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.