Certified - apparent DNS issues with certified.one PDS – Incident details

All systems operational

apparent DNS issues with certified.one PDS

Resolved
Major outage
Started about 2 months agoLasted about 3 hours

Affected

Certified Infra (production)

Major outage from 4:58 PM to 6:21 PM, Operational from 6:21 PM to 7:52 PM

certified.one (ePDS)

Major outage from 4:58 PM to 6:21 PM, Operational from 6:21 PM to 7:52 PM

Updates
  • Resolved
    UTC
    Resolved

    This incident has been resolved. Initial post-mortem at https://app.notion.com/p/Incident-post-mortem-certified-one-apex-TLS-outage-2026-06-02-373d7a3bc90d818caba3cc03ce5c59f5

  • Monitoring
    UTC
    Monitoring
    We implemented a fix and are currently monitoring the result.
  • Identified
    UTC
    Identified

    The TLS certificate being returned by the Railway infrastructure we use to host this service has unexpectedly changed to a misconfigured variant, despite no reconfiguration from our side. We are continuing to investigate.

  • Investigating
    UTC
    Investigating
    We are currently investigating this incident.