TL;DR
Cloudflare Radar's Iran routing page displays routing statistics, announced IP space trends and sections for IPv4/IPv6 and routing anomalies. The public page highlights monitoring options for BGP route leaks and origin hijacks, but the source does not explicitly confirm an IPv6 blackout or the cause of any routing disruption.
What happened
Cloudflare Radar's Iran routing dashboard lists routing statistics and announced IP address space for the country, together with controls to view IPv4 or IPv6 data and to explore trends over a selected time range. The page also provides a list of ASes registered in Iran and shows a dedicated section for routing anomalies, including tools and notices for recent BGP route leaks and potential BGP origin hijacks. The site links to related Cloudflare blog posts that analyze BGP incidents elsewhere and technical topics such as "BGP zombies" and monitoring AS-SETs. The page offers notification options for BGP route leaks and hijacks affecting Iran. The source material documents these monitoring capabilities and related posts but does not provide a detailed incident report or confirm an IPv6 blackout, its scope, or root cause.
Why it matters
- Routing anomalies can disrupt access to services and affect Internet reachability for users in a country.
- Loss or withdrawal of announced IPv6 prefixes would reduce reachable IPv6 address space and could force traffic onto IPv4 paths.
- BGP route leaks and origin hijacks are common mechanisms that can cause widespread routing instability or traffic interception.
- Operator-level telemetry (like Cloudflare Radar) provides early signals that network engineers and operators can use to investigate and mitigate incidents.
Key facts
- Source: Cloudflare Radar routing page for Iran (radar.cloudflare.com/routing/ir) published 2026-01-08.
- The dashboard exposes announced IP address space over a selected time range and allows toggling between IPv4 and IPv6 views.
- It lists ASes registered in Iran and enables ranking by customer cone size, ASN or address counts.
- A dedicated 'Routing Anomalies' area surfaces detected issues, with subsections for BGP route leaks and BGP origin hijacks (beta).
- Users can opt to be notified about BGP route leaks and potential BGP hijacks affecting Iran.
- Cloudflare links to related blog posts about BGP anomalies, including discussions of route leaks, 'BGP zombies' and AS-SET monitoring.
- The page is designed for operator and researcher use; it provides data explorer and sharing options for routing statistics.
- The source does not include an incident timeline, affected networks list, or confirmation of an IPv6 blackout event.
What to watch next
- Whether the announced IPv6 address space for ASes registered in Iran shows sustained declines or withdrawals (not confirmed in the source).
- Any newly logged BGP route leaks or origin hijacks on the Cloudflare Radar Iran page and the notification feed (not confirmed in the source).
- Follow-up technical posts or operator reports that would provide root-cause analysis and scope (not confirmed in the source).
Quick glossary
- BGP: Border Gateway Protocol, the protocol that routers use to exchange reachability information between autonomous systems on the Internet.
- IPv6: Internet Protocol version 6, the successor to IPv4 that provides a much larger address space for devices on the Internet.
- Autonomous System (AS): A collection of IP networks and routers under the control of a single administrative entity that presents a common routing policy to the Internet.
- Route leak / Origin hijack: Classes of routing incidents where BGP announcements are improperly propagated or falsified, potentially redirecting or disrupting traffic.
Reader FAQ
Did Cloudflare confirm an IPv6 blackout in Iran?
Not confirmed in the source.
What kinds of routing issues does the page track?
The page tracks announced IP address space trends, AS listings, and flags routing anomalies including BGP route leaks and potential BGP origin hijacks.
Are there details about which networks are affected?
Not confirmed in the source.
Can I get alerts about BGP incidents affecting Iran from Cloudflare Radar?
The source indicates options to subscribe for notifications about BGP route leaks and potential BGP hijacks for Iran.
Routing statistics Statistics about relevant global routing table entries Share this… Routing Information in Iran Location Iran Date range: Last 7 days Routing statistics Statistics about relevant global routing table…
Sources
- Iran Goes Into IPv6 Blackout
- Shutdown season: the Q2 2025 Internet disruption summary
- Cloudflare Radar: Iran Overview
- Problems At Cloudflare Led To Widespread Disruptions
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