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Resolved Cloudflare · degraded service

Cloudflare Gateway DNS-over-TLS Connectivity Issues over IPv4

Started 2 Nov 22:12 UTC, resolved 3 Nov 00:34 UTC: it lasted 2 h 21 min.

Cloudflare status pageOn the status board
2 h 21 min How long it lasted, from the provider's times
3Updates posted
4Other incidents at the same time

What it affected

As the provider names it

Gateway

What the provider posted

Newest first
  1. 3 Nov 00:34 UTCResolvedThis incident has been resolved.
  2. 3 Nov 00:23 UTCMonitoringOur team has been able to identify and apply an effective fix for this issue. We are currently monitoring the results.
  3. 2 Nov 22:12 UTCInvestigatingCloudflare 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.

Around it

From the sources ChangeIntel reads; a match in time is not a cause

Earlier incidents in the 14 days before

Changed in the 14 days before

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What changed

  1. Resolved: 3 Nov 2026 00:34 UTC · Status: Monitoring → Resolved · Incident state: Ongoing → Ended
  2. Status: Investigating → Monitoring
Page history

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Field-level log (6)

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  1. 3 Nov 2026 · 00:35:34 UTC Resolved3 Nov 2026 00:34 UTC
  2. 3 Nov 2026 · 00:35:34 UTC StageMonitoring → Resolved
  3. 3 Nov 2026 · 00:35:34 UTC Observed stateOngoing → Ended
  4. 3 Nov 2026 · 00:35:34 UTC SummaryOur team has been able to identify and apply an effective fix for this issue. We are currently monitoring the results. → This incident has been resolved.
  5. 3 Nov 2026 · 00:25:25 UTC StageInvestigating → Monitoring
  6. 3 Nov 2026 · 00:25:25 UTC SummaryCloudflare 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. → Our team has been able to identify and apply an effective fix for this issue. We are currently monitoring the results.
ChangeIntel

An IT change radar: releases, security, known issues, retirements, documentation changes, and service status from public sources. Every item links to supporting evidence; dates and statuses can change after they are read.

Sources read 13 Nov 13:11 UTC · 274 of 275 readable · 273 fully read · documentation 469/469 current

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