Secondary DNS Update Delays

Minor · Started Sep 25, 2026 · 1:52 AM

Duration

< 1m
Severity

Minor
Detection lead

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User reports

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Summary

Secondary DNS Update Delays

Cloudflare observed and resolved delays with Secondary DNS zone transfers. Customers may have experienced delays when record updates made on primary nameservers propagate to Cloudflare Secondary DNS as well as in the other direction. DNS resolution and edge proxying remain unaffected and continue to function normally. Impact on DNS transfers may have been observed today, from 00:05:10 UTC to 01:52:54.

Started

Sep 25, 2026 · 1:52 AM
Resolved

Sep 25, 2026 · 1:52 AM
Duration

< 1m
Severity

Minor

Event timeline

How this incident unfolded

✓

Resolved
Sep 25 · 10:10 AM Cloudflare

Cloudflare observed and resolved delays with Secondary DNS zone transfers. Customers may have experienced delays when record updates made on primary nameservers propagate to Cloudflare Secondary DNS as well as in the other direction. DNS resolution and edge proxying remain unaffected and continue to function normally. Impact on DNS transfers may have been observed today, from 00:05:10 UTC to 01:52:54.