Outage in Cloudflare
Cloudflare Gateway DNS-over-TLS Connectivity Issues over IPv4
Resolved MinorIncident Report
Summary AI Generated
Cloudflare Gateway experienced a 2.4-hour outage affecting DNS-over-TLS (DoT) connections over IPv4, causing connection timeouts and failed DNS resolution for impacted customers. Other DNS methods, including DoT over IPv6, DNS-over-HTTPS, and standard DNS over UDP/TCP, remained unaffected. Cloudflare's team identified and applied a fix, with the service entering a monitoring phase shortly after midnight on November 3, 2026.
Cloudflare is investigating an issue affecting Cloudflare Gateway DNS-over-TLS (DoT) connections over IPv4. Affected customers may experience connection timeouts and failed DNS resolution.
This issue is limited to DoT over IPv4. DoT over IPv6, DNS-over-HTTPS (DoH), and standard DNS over UDP/TCP are not affected.
We are working to identify the cause and restore connectivity. Further updates will be provided as more information becomes available.
Trusted by 1,000+ teams
The Status Page Aggregator with Early Outage Detection
Stop finding out about outages from your users. Monitor 6,320+ cloud services and get alerted the second something breaks.
Latest Updates ( sorted recent to last )
MONITORING
about 21 hours ago - at 11/03/2026 12:23AM
Our team has been able to identify and apply an effective fix for this issue. We are currently monitoring the results.
INVESTIGATING
about 23 hours ago - at 11/02/2026 10:12PM
Cloudflare is investigating an issue affecting Cloudflare Gateway DNS-over-TLS (DoT) connections over IPv4. Affected customers may experience connection timeouts and failed DNS resolution.
This issue is limited to DoT over IPv4. DoT over IPv6, DNS-over-HTTPS (DoH), and standard DNS over UDP/TCP are not affected.
We are working to identify the cause and restore connectivity. Further updates will be provided as more information becomes available.
Latest Cloudflare outages
Increased Durable Object Errors in the Dallas, TX US region - about 6 hours ago
Cloudflare Workers and Pages build errors - about 7 hours ago
Network Performance Issues in APJC - about 17 hours ago
Cloudflare Container Issues - about 17 hours ago
Worker Deployments Delayed - 1 day ago
The Status Page Aggregator with Early Outage Detection
With IsDown, you can monitor all your critical services' official status pages from one centralized dashboard and receive instant alerts the moment an outage is detected. Say goodbye to constantly checking multiple sites for updates and stay ahead of outages with IsDown.
Start free trialNo credit card required · Cancel anytime · 6320 services available
Integrations with
