Iran experienced a near-total nationwide internet blackout, with independent monitoring indicating national connectivity fell to roughly 4% of normal levels amid US and Israeli strikes. NetBlocks reported the sharp drop in connectivity, and Cloudflare telemetry similarly showed Iran’s internet traffic falling to effectively zero, consistent with a broad disconnection from the global internet. Reporting characterized the disruption as resembling prior wartime connectivity restrictions and suggested it may reflect deliberate state measures to control information flows and reduce exposure to external cyber activity during a crisis.
Separate reporting tied the blackout to a large-scale cyberattack occurring in parallel with kinetic operations (described as part of Operation “Roar of the Lion”), alleging impacts to critical infrastructure, official news sites, and security communications. In contrast, analysis of Iran’s earlier 2026 communications shutdown described a government-led, multi-layer takedown that went beyond typical censorship—disrupting not only international connectivity but also domestic services (including the National Information Network), with broad outages across mobile networks, SMS, landlines, and reported blocking of Starlink—highlighting Iran’s evolving “two-tier” network design and its use for internal control during unrest.

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Large-scale cyberattacks reported alongside the strikes disrupted critical infrastructure, official news websites, and security communications systems. Local media said key outlets including IRNA and ISNA were affected, contributing to a broader communications blackout.
Cloudflare reported that as of 18:45 UTC, Iran’s internet traffic had dropped to effectively zero, consistent with a complete shutdown and disconnection from the global internet. The observation reinforced reports of a nationwide blackout.
Amid reported Israeli and U.S. military strikes, Iran experienced a near-total nationwide internet disruption. NetBlocks said national connectivity fell to about 4% of normal levels, indicating an almost complete shutdown.
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