Real-time measurements from the internet-monitoring group NetBlocks showed that nationwide connectivity in Iran collapsed to about 15% of ordinary levels on Saturday night, effectively cutting most of the country off from the global web. The disruption began shortly after 22:00 local time on 5 July and affected fixed and mobile networks across all provinces, NetBlocks said. Iranian state and semi-official media, citing the government-owned Telecommunication Infrastructure Company, confirmed "partial disruption" to international links but did not specify a cause. As of early Sunday, authorities had not indicated whether the outage was the result of technical failure, state action or a cyber incident, and there was no firm timeline for restoration. The blackout comes only weeks after Tehran restricted communications during fighting with Israel, and follows repeated warnings from digital-rights groups about the use of network shutdowns to curb information flows. Flight-tracking data from FlightRadar24 separately showed an unusually empty Iranian airspace during the disruption, though aviation officials have not commented on any link between the two events.