Cisco Umbrella incident

Secondary Protective DNS (PDNS) IP Address not reachable

Minor Resolved View vendor source →

Cisco Umbrella experienced a minor incident on November 27, 2025 affecting DNS, lasting 1h 44m. The incident has been resolved; the full update timeline is below.

Started
Nov 27, 2025, 10:59 PM UTC
Resolved
Nov 28, 2025, 12:44 AM UTC
Duration
1h 44m
Detected by Pingoru
Nov 27, 2025, 10:59 PM UTC

Affected components

DNS

Update timeline

  1. identified Nov 27, 2025, 10:59 PM UTC

    We are currently investigating an issue with the secondary Protective DNS (PDNS) IP Address (204.194.234.200) not being reachable from the public internet. The primary IP Address (204.194.232.200) remains operational. Only customers using this specific IP Address may be impacted in the event that they are unable to reach the primary IP Address.

  2. monitoring Nov 27, 2025, 11:51 PM UTC

    A fix has been implemented and we are monitoring the results. The issue should be resolved for most (but not all) customers.

  3. resolved Nov 28, 2025, 12:44 AM UTC

    This incident has been resolved.