Batam Sarawak Internet Cable System (BaSICS): latency up to 2.2× normal, 5 Sep 2026
What we measured
| Cable | Batam Sarawak Internet Cable System (BaSICS) |
| Segment | Sydney, AU → Kuching, MY |
| Detected | 2026-09-05 01:31 UTC |
| Resolved | 2026-09-05 12:32 UTC |
| Duration | 11h 0m |
| Observed latency | 105.6 ms |
| Baseline | 153.3 ms · 2.23× |
| Increase | +123% |
| Severity | warning |
Who is affected
Countries where Batam Sarawak Internet Cable System (BaSICS) 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 |
|---|---|---|---|
| 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 233 ms today vs 200 ms over 30 days (1070 routes) - slower |
| 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 |
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. Too few independent vantage points were watching this endpoint to reach a cross-probe verdict.
Timeline
- Alert 2026090503: warning - ratio 2.23x
- Alert #189 improving: 1/3 consecutive OK
- Alert #189 improving: 2/3 consecutive OK
- Alert #189 improving: 1/3 consecutive OK
- Alert #189 improving: 2/3 consecutive OK
- Alert #189 resolved: RTT 105.57ms (baseline 153.29ms), 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.