Crossref incident
Cloudflare network problems affecting DOI.org resolution
Resolved after 7 hours 10 minutes, affecting Handle servers, on November 18, 2025.
CNRI has written a postmorterm about how they handled the Cloudflare outage for doi.org: [https://doi.statuspage.io/incidents/z0rwt8tqcfsm](https://doi.statuspage.io/incidents/z0rwt8tqcfsm)
Affected components
Update timeline
- investigating Nov 18, 2025, 12:51 PM UTC
Cloudflare network problems are affecting multiple sites, including doi.org resolution, meaning many DOI links are very slow or result in errors. https://www.cloudflarestatus.com/incidents/8gmgl950y3h7
- investigating Nov 18, 2025, 01:12 PM UTC
The DOI Foundation is also aware: https://doi.statuspage.io/incidents/z0rwt8tqcfsm
- resolved Nov 18, 2025, 08:01 PM UTC
Clouflare reports that the issues are fixed, and DOIF subsequently reports that doi.org resolutions have returned to normal.
- postmortem Nov 20, 2025, 08:22 PM UTC
CNRI has written a postmorterm about how they handled the Cloudflare outage for doi.org: [https://doi.statuspage.io/incidents/z0rwt8tqcfsm](https://doi.statuspage.io/incidents/z0rwt8tqcfsm)
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