us-east-1 Intermittent DNS Resolution Errors

Minor · Started Mar 17, 2026 · 6:33 PM

Duration

59m
Severity

Minor
Detection lead

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User reports

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Summary

us-east-1 Intermittent DNS Resolution Errors

Additional detail about timeline: we observed a relative increase in DNS resolver errors in us-east-1 beginning at approximately 2026-03-17 18:30 UTC. The elevated error rate was intermittent rather than constant, with the most visible clusters occurring from roughly 18:30-18:55 UTC and again from about 20:55-21:40 UTC. Error rates returned to normal shortly after 21:40 UTC.

Started

Mar 17, 2026 · 6:33 PM
Resolved

Mar 17, 2026 · 7:33 PM
Duration

59m
Severity

Minor

Event timeline

How this incident unfolded

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Investigating
Mar 17 · 6:33 PM Aptible

We are currently observing intermittent DNS resolution failures affecting infrastructure in us-east-1. These resolver errors may cause some Aptible Deploy operations (such as deploys, restarts, SSH, or container provisioning) to fail or time out. Applications running on Aptible Deploy that rely on network hostname resolution may also experience intermittent connection failures related to DNS resolution. We are actively working with our infrastructure providers to investigate the issue and will provide updates here as they are available.
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Monitoring
Mar 17 · 7:02 PM Aptible

We have observed DNS resolution error rates return to normal levels, and all dependent activities should be functioning normally. We will continue to monitor for an additional period to ensure the issue is fully resolved before closing the incident. Further updates will be posted here if we observe any recurrence.
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Resolved
Mar 17 · 7:33 PM Aptible

This incident has been resolved.
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Postmortem
Mar 18 · 12:42 PM Aptible

Additional detail about timeline: we observed a relative increase in DNS resolver errors in us-east-1 beginning at approximately 2026-03-17 18:30 UTC. The elevated error rate was intermittent rather than constant, with the most visible clusters occurring from roughly 18:30-18:55 UTC and again from about 20:55-21:40 UTC. Error rates returned to normal shortly after 21:40 UTC.