Is the internet going down? Undersea sub-cables have just broken...
Interoute, the internet networks company, reports that three of the four internet sub-cables that run from Asia to North America have been damaged.
Context & Ripple Effects
This is a recurring failure mode, not a one-off: barely a year earlier a single faulty cable blacked out internet access for millions, and the pattern has repeated since — from the 2011 earthquake-damaged cables that triggered a repair rush [[a:1190585]] to 2024's simultaneous cuts of four major African subsea cables that forced telecoms to reroute traffic via Brazil and overland routes [[a:850575]]. Interoute's report that three of the four Asia–North America cables are down at once is notable because it hits the busiest transit corridor on the internet rather than a regional spur.
First-order effects
- Interoute and other carriers on the Asia–North America path must immediately shift traffic onto the one remaining cable or overland/alternative routes, degrading capacity and latency for trans-Pacific users.
- Enterprises and consumers in Asia face slower or intermittent connectivity to North American services until cable ships locate and splice the breaks.
Second-order effects
- Rival network operators gain a selling window for diverse routing — as seen when African operators rerouted via Brazil after four cables were cut [[a:850575]] — pushing demand for multi-path transit contracts.
- Repair-ship capacity becomes the bottleneck; concurrent breaks elsewhere (Vietnam reported three of five international cables down in mid-2024 [[a:867612]]) stretch the small global fleet of cable maintenance vessels.
Third-order effects
- If multi-cable outages keep recurring, redundancy itself becomes the product: carriers and cloud providers will pay premiums for geographically diverse landings and satellite backhaul, reshaping how backbone capacity is bought.
- The concentration of global traffic in a few hundred cables invites growing policy attention to cable protection and repair readiness — though experts note most damage is accidental, not hostile [[a:925499]].
The trend: The internet's physical fragility keeps resurfacing: each multi-cable outage pushes operators toward treating route diversity and rapid repair capability as core infrastructure investments rather than insurance afterthoughts.