Italy-Libya cable: latency up to 2.6× normal, 11 Sep 2026
What we measured
| Cable | Italy-Libya |
| Segment | Mazara del Vallo, IT → Tripoli, LY |
| Detected | 2026-09-11 12:03 UTC |
| Resolved | 2026-09-13 04:06 UTC |
| Duration | 1d 16h |
| Observed latency | 9 ms |
| Baseline | 10.3 ms · 2.62× |
| Increase | +386% |
| Severity | warning |
Who is affected
Countries where Italy-Libya 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 |
|---|---|---|---|
| Italy resilience index: 100 · resilient |
1 of 38 cables (3% of submarine diversity) | 2Africa, ANDROMEDA, Asia Africa Europe-1 (AAE-1) +34 more | median 76 ms today vs 80 ms over 30 days (401 routes) - unchanged |
| Libya resilience index: 84 · resilient |
1 of 6 cables (17% of submarine diversity) | Europe India Gateway (EIG), LFON (Libyan Fiber Optic Network), Medusa Submarine Cable System +2 more | median 169 ms today vs 186 ms over 30 days (7 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. Too few independent vantage points were watching this endpoint to reach a cross-probe verdict.
Timeline
- Alert 2026091101: warning - ratio 2.62x
- Alert #201 improving: 1/3 consecutive OK
- Alert #201 improving: 1/3 consecutive OK
- Alert #201 improving: 1/3 consecutive OK
- Alert #201 improving: 1/3 consecutive OK
- Alert #201 improving: 2/3 consecutive OK
- Alert #201 resolved: RTT 9ms (baseline 10.32ms), 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.