Incident report · 2026040503
Asia-America Gateway (AAG) Cable System: latency anomaly, 5 Apr 2026
Resolved · 4h 59m
What we measured
| Cable | Asia-America Gateway (AAG) Cable System |
| Segment | Changi North, SG → Morro Bay, US |
| Detected | 2026-04-05 04:31 UTC |
| Resolved | 2026-04-05 09:31 UTC |
| Duration | 4h 59m |
| Observed latency | 116.5 ms |
| Baseline | 122.4 ms · 0.95× |
| Increase | +171% |
| Severity | warning |
Who is affected
Countries where Asia-America Gateway (AAG) Cable System 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 |
|---|---|---|---|
| Brunei resilience index: 58 · moderate |
1 of 5 cables (20% of submarine diversity) | Asia Link Cable (ALC), Asia United Gateway East (AUG East), Labuan-Brunei Submarine Cable +1 more | no measurement today; median 281 ms over 30 days (33 routes) |
| China resilience index: 100 · resilient |
1 of 24 cables (4% of submarine diversity) | APCN-2, Asia Africa Europe-1 (AAE-1), Asia Direct Cable (ADC) +20 more | median 159 ms today vs 160 ms over 30 days (99 routes) - unchanged |
| Guam resilience index: 83 · resilient |
1 of 19 cables (5% of submarine diversity) | Apricot, Asia Connect Cable-1 (ACC-1), Atisa +15 more | median 297 ms today vs 264 ms over 30 days (59 routes) - unchanged |
| 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 |
| Philippines resilience index: 100 · resilient |
1 of 26 cables (4% of submarine diversity) | APCN-2, Apricot, Asia Connect Cable-1 (ACC-1) +22 more | median 284 ms today vs 244 ms over 30 days (102 routes) - slower |
| 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 |
| 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 |
| United States resilience index: 100 · resilient |
1 of 122 cables (1% of submarine diversity) | ACS Alaska-Oregon Network (AKORN), AEC-1, Airraq +118 more | median 116 ms today vs 108 ms over 30 days (3282 routes) - unchanged |
| Vietnam resilience index: 81 · resilient |
1 of 9 cables (11% of submarine diversity) | Asia Africa Europe-1 (AAE-1), Asia Direct Cable (ADC), Asia Link Cable (ALC) +5 more | median 241 ms today vs 213 ms over 30 days (92 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
No usable traceroute data for this window.
Cross-probe verdict. Too few independent vantage points were watching this endpoint to reach a cross-probe verdict.
Timeline
- Alert #46: warning (backfilled)
- Alert #46 improving: 1/3 consecutive OK checks
- Alert #46 improving: 2/3 consecutive OK checks
- Alert #46 resolved: RTT 116.54ms (baseline 122.38ms)
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 2026040503: Asia-America Gateway (AAG) Cable System. https://geocables.com/incident/2026040503
Embed this map
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