Internet outage history
Hong Kong
Operational 19/20 hosts up since Oct 16, 2026 10:00 UTC
Every disruption Blackout Map has recorded in Hong Kong since monitoring began on October 16, 2026, with reported government shutdowns and submarine cable incidents.
Overview
Last 90 days
Worst status per day, last 90 daysDaily reachability
last 30 daysOur probes · hosts reachable
last 72 hoursIODA · routes and active probing, % of normal
last 72 hoursLatency from our server (Germany)
last 72 hoursThe same measurements as the live panel, per 30 minutes. Times in UTC.
Incidents
All incidents
our probes and IODANo disruptions recorded in Hong Kong since monitoring started on October 16, 2026.
Attacks and context
Context only — they don't change the status above.
DDoS attacks aimed at Hong Kong · 7 days
Per hour; each line is relative to its own busiest hour of the week (100%). Context only — attacks never change a country's status.
- Types
- UDP Flood 42% · SYN Flood 22% · Mirai (UDP) Flood 18% · SFU Flood 9%
- Duration
- 75% longer than 1 h · 15% under 20 min
- Size
- 42% under 500 Mbit/s · 0% over 10 Gbit/s
- Web attacks from
- Cloudflare 13% · HKT Limited 10% · Alibaba (US) Technology Co. 8%
Routing incidents · 7 days · Cloudflare Radar
10 possible hijacks of networks in Hong Kong, 77+ route leaks involving it.
- Oct 29 14:42 AS18978 (US) · 1 address blocks · confidence 10/10
- Oct 29 05:28 AS21859 (US) · 3 address blocks · confidence 8/10
- Oct 28 17:01 AS6461 (US) · 4 address blocks · confidence 10/10
- Oct 26 21:09 AS207108 (GB) · 1 address blocks · confidence 8/10
- Oct 26 12:21 AS141336 (IN) · 1 address blocks · confidence 10/10
Long-term history
Before our monitoring: IODA archive
13 incidents · 7 blackouts · 3 partial outagesOutages in Hong Kong detected by IODA (Georgia Tech) between January 2022 and the start of our own monitoring: drops in the country's internet routes (BGP) or in its reachability from IODA's active probing, compared with the day before. Each is checked against IODA's signal; small dips are left out.
| Started (UTC) | Duration | Worst level | Evidence |
|---|---|---|---|
| Oct 15, 2026 22:20 | 30 min | Blackout | IODA (Georgia Tech): active probing, lowest 6% of normal |
| Jun 20, 2026 11:40 | 2 hours | Blackout | IODA (Georgia Tech): active probing, lowest 27% of normal |
| May 3, 2026 20:50 | 50 min | Blackout | IODA (Georgia Tech): active probing, lowest 38% of normal |
| Aug 10, 2025 07:30 | 30 min | Degraded | IODA (Georgia Tech): active probing, lowest 83% of normal |
| Jul 24, 2025 08:50 | 20 min | Blackout | IODA (Georgia Tech): active probing, lowest 10% of normal |
| Mar 29, 2025 10:10 | 3 hours | Blackout | IODA (Georgia Tech): active probing, lowest 33% of normal |
| Mar 27, 2025 04:20 | 50 min | Partial outage | IODA (Georgia Tech): active probing, lowest 76% of normal |
| Mar 25, 2025 20:10 | 5 hours | Partial outage | IODA (Georgia Tech): active probing, lowest 79% of normal |
| Mar 25, 2025 17:30 | 50 min | Degraded | IODA (Georgia Tech): active probing, lowest 91% of normal |
| Mar 25, 2025 14:50 | 40 min | Degraded | IODA (Georgia Tech): active probing, lowest 93% of normal |
| Jul 6, 2024 11:00 | 30 min | Partial outage | IODA (Georgia Tech): active probing, lowest 74% of normal |
| Nov 19, 2023 12:40 | 2 hours | Blackout | IODA (Georgia Tech): active probing, lowest 19% of normal |
Show all 13
| Started (UTC) | Duration | Worst level | Evidence |
|---|---|---|---|
| Jul 21, 2023 11:20 | 2 hours | Blackout | IODA (Georgia Tech): active probing, lowest 44% of normal |
Government shutdowns and blocks
since 2019The Internet Society Pulse tracker has no recorded government shutdowns or blocks in Hong Kong since 2019.
Provided by Internet Society.
Submarine cable incidents
No submarine cable incidents recorded for Hong Kong.
Cable incidents: GeoCables (CC BY 4.0). Context only — they never change a country's status.