IOEMA-1 cable: latency up to 2.7× normal, 30 Jun 2026
What we measured
| Cable | IOEMA-1 |
| Segment | Minsk, BY → Dumpton Gap, GB |
| Detected | 2026-06-30 10:31 UTC |
| Resolved | 2026-06-30 12:32 UTC |
| Duration | 2h 0m |
| Observed latency | 43.3 ms |
| Baseline | 48.8 ms · 2.65× |
| Increase | +165% |
| Severity | warning |
Who is affected
Countries where IOEMA-1 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 |
|---|---|---|---|
| Denmark resilience index: 100 · resilient |
1 of 33 cables (3% of submarine diversity) | Aurora, Baltica, CANTAT-3 +29 more | median 57 ms today vs 65 ms over 30 days (177 routes) - unchanged |
| Germany resilience index: 100 · resilient |
1 of 11 cables (9% of submarine diversity) | Atlantic Crossing-1 (AC-1), C-Lion1, Elektra-GlobalConnect 1 (GC1) +7 more | median 56 ms today vs 64 ms over 30 days (1402 routes) - unchanged |
| Netherlands resilience index: 100 · resilient |
1 of 12 cables (8% of submarine diversity) | Amerigo Vespucci, Atlantic Crossing-1 (AC-1), Circe North +8 more | median 46 ms today vs 54 ms over 30 days (724 routes) - unchanged |
| Norway resilience index: 100 · resilient |
1 of 19 cables (5% of submarine diversity) | Arctic Way, Bodo-Rost Cable, Eviny Digital +15 more | median 64 ms today vs 86 ms over 30 days (103 routes) - faster |
| United Kingdom resilience index: 100 · resilient |
1 of 68 cables (1% of submarine diversity) | 2Africa, Amitie, Apollo +64 more | median 103 ms today vs 74 ms over 30 days (1011 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 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 2026063002: warning - ratio 2.65x
- Alert #140 improving: 1/3 consecutive OK
- Alert #140 improving: 2/3 consecutive OK
- Alert #140 resolved: RTT 43.3ms (baseline 48.8ms), 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.