Jakarta-Bangka-Batam-Singapore (B2JS) cable: latency up to 2.5× normal, 14 Apr 2026
What we measured
| Cable | Jakarta-Bangka-Batam-Singapore (B2JS) |
| Segment | Tanah Merah, SG → Jakarta, ID |
| Detected | 2026-04-14 03:02 UTC |
| Resolved | 2026-04-14 04:31 UTC |
| Duration | 1h 29m |
| Observed latency | 50.7 ms |
| Baseline | 56.9 ms · 2.51× |
| Increase | +151% |
| Severity | warning |
Who is affected
Countries where Jakarta-Bangka-Batam-Singapore (B2JS) 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 230 ms today vs 203 ms over 30 days (1061 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 155 ms today vs 163 ms over 30 days (509 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 kept the same route. Latency rose without a visible path change, which points at congestion or a fault on the existing route rather than a reroute.
Cross-probe verdict. Other measurements did not confirm the event. We treat this as a probable false positive and label it as such.
Timeline
- Alert 2026041402: warning - ratio 2.51x
- Alert #73 improving: 1/3 consecutive OK
- Alert #73 resolved: RTT 50.68ms (baseline 56.92ms), 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.