Internet status in South Korea Operational
Address blocks silent right now: 0% · 2026-10-21 03:08:24 UTC
Leading providers
| Provider | ASN | Share of users | Status | Signal dip |
|---|---|---|---|---|
| Korea Telecom | AS4766 | 46.3% | Operational | 0% |
| LG Powercomm | AS17858 | 20.3% | Operational | 1% |
| SK Telecom | AS9644 | 10.3% | Operational | 10% |
| Lgtelecom | AS17853 | 6.4% | Operational | 0% |
| LG Dacom | AS3786 | 4.8% | Operational | 4% |
| Dacom-Pubnetplus | AS9316 | 2.6% | Operational | 0% |
| SK Broadband Co | AS9318 | 1.7% | Operational | 0% |
| Dlive | AS10036 | 1% | Operational | 0% |
ℹ️ How to read this page
Degraded - signal dip ≥20% below its 24h baseline - partial outage or major disturbance
Major outage - dip ≥50% - large-scale loss of connectivity
“Signal dip” compares the current BGP-visibility and active-probing levels against the median of the previous 24 hours, corrected for global measurement artifacts (a worldwide simultaneous drop is ignored).
Data refreshes hourly. Per-ISP rows are measured in depth when the country shows an anomaly (pilot countries - continuously). The probable cause is a heuristic: an active fault on a submarine cable feeding the country ranks first, then routing signals, then power/access patterns.
Recorded outages in South Korea
No country-level outages recorded for South Korea since 21 Jun 2026.
Submarine cables feeding South Korea
If a national outage coincides with a fault on one of these systems, the cable is a likely cause - check its live page:
Incident history
Significant incidents on cables landing here, each with its own report.
Internet in South Korea: questions and answers
Is the internet down in South Korea right now?
No. At the last check (21 Oct 2026 03:08 UTC) the internet in South Korea was working normally: the signal was at its usual level.
When was the last internet outage in South Korea?
No country-level outages have been recorded for South Korea since 21 Jun 2026, when the records begin.
Which internet providers are watched in South Korea?
GeoCables watches the leading providers of South Korea: Korea Telecom (46.3%), LG Powercomm (20.3%), SK Telecom (10.3%), Lgtelecom (6.4%), LG Dacom (4.8%). The share is the part of the country's internet users served by the provider.
Which submarine cables connect South Korea?
South Korea is connected by 17 submarine cables in the GeoCables database, among them APCN-2, Asia Pacific Gateway (APG), Asia United Gateway East (AUG East), E2A. A break on one of them can slow down or cut international traffic.
How does GeoCables detect an internet outage?
The status comes from two independent signals: routing announcements (BGP) and active probing of networks inside the country. A drop of 20% or more below the usual level of the last 24 hours is shown as degraded, a drop of 50% or more as an outage. See internet outages in all countries.