Cloudflare's 1.1.1.1 DNS resolver disappears from the internet
A weeks-old configuration error, triggered by an unrelated change, withdrew its BGP routes for over an hour.
- Service
- Cloudflare 1.1.1.1
- Date
- 14 July 2025
- Cause
- Configuration change
- Duration
- 1 hours
- Status
- resolved
- Severity
- major
- Region
- Global
- Source
- Network World / ThousandEyes ↗
Cite this
Nuffield Consulting, “Cloudflare's 1.1.1.1 DNS resolver disappears from the internet”, The Daily Tech Wire outage & breach log, 14 Jul 2025. https://techwire.nuffieldconsulting.com/incidents/2025-07-14-cloudflare-1-1-1-1-outage/ (retrieved 15 Nov 2026).
This entry summarises public reporting. Please also cite the original source: Network World / ThousandEyes, https://networkworld.com/article/4124642/top-11-network-outages-and-application-failures-of-2025.html.
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