"Cloudflare reports that an almost total loss of announced IPv6 address space started several hours before the cut-off actually hit on January 8, which was an indicator of what was to come."
"In the war-related shutdown, the Cloudflare Radar service noticed a sharp drop in traffic from Iran around 10:30 local time. Traffic levels fell to less than 1 percent of normal."
"Selected users continued to access approved internet sites via 'whitelists' and 'white SIM cards,' suggesting that the shutdown was effectively achieved through aggressive filtering."
In the first quarter of 2026, significant internet disruptions were reported, including government shutdowns and technical failures. Iran experienced a 61-day internet blackout following military actions. The initial blackout began on January 8 due to protests, with traffic dropping to near zero. Cloudflare noted a loss of IPv6 address space before the shutdown, indicating filtering methods were used. During the war-related shutdown, traffic from Iran fell to less than 1 percent of normal, although some users accessed the internet through whitelists.
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