All Systems Operational

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We continuously monitor the status of various services offered by the DOI Foundation: the DOI Resolution Service and the DOI Website. In addition to the status information, if there are any interruptions in those services, we will post a note here.

To stay informed about any issues affecting those services, subscribe to updates via email, Twitter or RSS feeds by clicking on the provided link above.

Uptime over the past 90 days. View historical uptime.
DOI Resolution Service Operational
90 days ago
100.0 % uptime
Today
DOI Website Operational
90 days ago
100.0 % uptime
Today
Operational
Degraded Performance
Partial Outage
Major Outage
Maintenance
Major outage
Partial outage
No downtime recorded on this day.
No data exists for this day.
had a major outage.
had a partial outage.

No incidents or maintenance related to this downtime.

System Metrics Month Week Day
DOI Resolution Service Response Time (North America)
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DOI Resolution Service Response Time (Europe)
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DOI Resolution Service Response Time (Asia)
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DOI Resolution Service Response Time (Latin America)
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DOI Website Response Time (North America)
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Oct 18, 2025

No incidents reported today.

Oct 17, 2025
Unusual traffic spike resulting in problems resolving DOIs for a percentage of traffic
Resolved - At 2025-10-17 03:08Z lasting for a minute or so, there was a surge of resolution traffic at doi.org at maybe 150x normal traffic. We suspect this may have been a DDoS attempt or a test of a possible DDoS technique. Resolution was impacted for ordinary users of doi.org; as many as 80000 resolution requests (approximately 5% of the apparently legitimate traffic during this time) received various errors, most in the first few minutes but some as late as 03:32Z.

Currently resolution is normal but we continue to monitor.
Oct 17, 04:49 UTC
Oct 16, 2025

No incidents reported.

Oct 15, 2025

No incidents reported.

Oct 14, 2025

No incidents reported.

Oct 13, 2025

No incidents reported.

Oct 12, 2025
Unusual spikes in traffic; potential impact on a small number of regular users
Resolved - The traffic spikes have stopped. We will continue considering ways to prevent this kind of traffic from impacting the use of the system by other users in the future.
Oct 12, 21:56 UTC
Investigating - Overnight there was an unusual series of traffic spikes on the doi.org resolution servers. The spikes were large (100x normal traffic) but lasted for only seconds each time and happened roughly once an hour, so scaling in new resolution servers in response to traffic was not helpful.

Our "load shedding" infrastructure successfully kicked in and prevented any instability, at the cost of a small number of "friendly" requests potentially receiving either a 429 or 503 response. I estimate that up to 2000-3000 friendly requests might have gotten such responses, many of which are normally friendly bots, but some of which might have been ordinary users. If it was a human clicking a link, they almost certainly would have succeeded on trying a second time.

If there are any user complaints about doi.org resolution service early today (2025-10-12) I would be interested to know about it.

We are monitoring the situation to see whether these spikes resume, and considering ways to prevent this kind of traffic from impacting the use of the system by other users in the future.
Oct 12, 17:20 UTC
Oct 11, 2025

No incidents reported.

Oct 10, 2025

No incidents reported.

Oct 9, 2025

No incidents reported.

Oct 8, 2025

No incidents reported.

Oct 7, 2025

No incidents reported.

Oct 6, 2025

No incidents reported.

Oct 5, 2025

No incidents reported.

Oct 4, 2025

No incidents reported.

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