Malaysia-Cambodia-Thailand (MCT) Cable: latency up to 2.4× normal, 26 Aug 2026
What we measured
| Cable | Malaysia-Cambodia-Thailand (MCT) Cable |
| Segment | Rayong, TH → Cherating, MY |
| Detected | 2026-08-26 09:31 UTC |
| Resolved | 2026-08-27 22:00 UTC |
| Duration | 1d 12h |
| Observed latency | 77.9 ms |
| Baseline | 59.3 ms · 2.39× |
| Increase | +139% |
| Severity | critical |
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 64 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 217 ms today vs 180 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 224 ms today vs 215 ms over 30 days (157 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 while latency was elevated. A reroute of this kind usually follows a fault somewhere on the original path.
Cross-probe verdict. Our own cross-check concluded this was an operator reroute, not a cable fault. We publish it anyway, labelled as such.
Timeline
- Alert 2026082601: warning - ratio 2.39x
- Alert #178 improving: 1/3 consecutive OK
- Alert #178 improving: 2/3 consecutive OK
- Alert #178 improving: 1/3 consecutive OK
- Alert #178 improving: 2/3 consecutive OK
- Alert #178 resolved: RTT 77.91ms (baseline 59.33ms), 3 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.