Understanding the Context of the Shutdowns
Iran experienced two significant nationwide Internet shutdowns in 2026, each corresponding with major geopolitical events. The first began on January 8 and lasted until January 21, with intermittent connectivity observed on January 25 and more stable recovery starting January 27. The second, more prolonged, shutdown commenced on February 28 amidst escalating military tensions. This event drastically reduced online traffic levels to less than 1% of their normal volumes, effectively isolating the country for nearly three months.
The extended loss of Internet connectivity disrupted daily life, commerce, and access to information for millions of citizens. Understanding the data behind these events provides insight into the technical and social impacts of such disruptions. Cloudflare Radar's metrics serve as a critical tool in monitoring and analyzing these patterns of connectivity and disconnection.
Key Observations During the Shutdown Periods
During the initial shutdown in January, traffic plummeted to near-zero levels, with only sporadic signs of restoration. A slight resumption of traffic on January 21 was short-lived, as connectivity disappeared within 24 hours. A similar pattern occurred on January 25 before the situation normalized by January 27. These brief restorations suggest possible testing of network systems or limited relaxation of restrictions during the blackout.
The second shutdown, triggered by events in late February, was more severe and sustained. Cloudflare Radar observed a dramatic traffic drop starting at 10:30 AM local time on February 28. For 87 days, Internet activity remained at negligible levels, significantly affecting data transfer rates and DNS queries. Such extended shutdowns underscore the challenges of maintaining digital infrastructure during geopolitical crises.
Indicators of Restoration on May 26
On May 26, Cloudflare Radar detected a marked increase in Internet activity, signaling a partial restoration of connectivity. At 11:00 UTC, both traffic and DNS queries began to rise noticeably. By 11:45 UTC, a sharp spike in bytes transferred was recorded, followed by a steady increase starting at 12:00 UTC.
This surge in activity was approximately 15 times higher than levels observed in the previous week. The restoration followed diurnal traffic patterns, with a gradual decline around 9:00 PM UTC and a subsequent rise starting early the next morning. These patterns indicate a return to more typical usage behaviors among Iranian users.
Technological Insights from Cloudflare Data
Cloudflares data highlights the precision with which Internet activity can be monitored during outages. Metrics like DNS queries and bytes transferred allow for an accurate assessment of both the extent and recovery of Internet connectivity. This capability is critical for understanding the impact of network disruptions on a national scale.
The data also suggests that the restoration process is often gradual, with certain regions or services coming online before others. This indicates a phased approach to re-enabling access, likely influenced by technical constraints or strategic considerations. Such insights underscore the importance of resilient infrastructure capable of withstanding large-scale disruptions.
Implications and Future Considerations
The prolonged Internet outages in Iran highlight the fragility of digital connectivity under geopolitical stress. For infrastructure engineers, these events underscore the need for redundant systems and alternative communication pathways. Such measures can mitigate the impact of forced or unintended network disruptions.
Additionally, the data serves as a reminder of the importance of real-time monitoring tools like Cloudflare Radar. These tools not only provide visibility into disruptions but also enable proactive steps to reestablish connectivity. As the Internet continues to be a crucial component of modern life, ensuring its resilience must remain a priority for engineers and policymakers alike.