All Systems Operational

Uptime over the past 90 days. View historical uptime.
APIs Operational
Public REST API Operational
Polite REST API Operational
OAI-PMH Operational
XML API Operational
OpenURL Operational
Crossmark dialog server Operational
Public content negotiation Operational
Polite content negotiation Operational
Metadata Plus Operational
Plus REST API Operational
Plus OAI-PMH Operational
XML Snapshots Operational
JSON Snapshots Operational
Plus content negotiation Operational
Key Manager Operational
Content Registration Operational
Admin tool Operational
Test admin tool Operational
Web deposit form Operational
New Metadata Manager Operational
Metadata files Operational
Open Funder Registry Operational
Retraction Watch Operational
Annual public data files Operational
Sites Operational
Crossref website Operational
Crossref support Operational
Metadata search Operational
Participation reports Operational
Integrations and external dependencies Operational
90 days ago
100.0 % uptime
Today
Handle servers Operational
Monitoring of iThenticate can be seen at https://turnitin.statuspage.io. Operational
AWS cloudfront Operational
ORCID Auto-update Operational
90 days ago
100.0 % uptime
Today
Meta Operational
deliberately-unreliable server Operational
Demo Auth Operational
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.

Scheduled Maintenance

1 September - weekly maintenance, release v0.288.0 Sep 1, 2026 14:00-16:00 UTC

We will be undergoing scheduled maintenance - release version v0.288.0 - on Tuesday, 1 September from 1400 to 1600 UTC. Our members may experience delays in deposit system admin tool (doi.crossref.org) processing. Deposits submitted during this time will be stored and processed after the maintenance has been completed.
Posted on Aug 31, 2026 - 14:18 UTC
System Metrics Month Week Day
Public REST API Response Time
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Public REST API Uptime
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Polite REST API Response Time
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Polite REST API Uptime
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Plus REST API Response Time
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Plus REST API Uptime
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Plus OAI-PMH Response Time
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Plus OAI-PMH Uptime
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OpenURL Response Time
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OpenURL Uptime
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Public Content Negotiation Response Time
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Public Content Negotiation Uptime
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Polite Content Negotiation Response Time
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Polite Content Negotiation Uptime
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Plus Content Negotiation Response Time
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Plus Content Negotiation Uptime
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Crossmark Response Time
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Crossmark Uptime
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Crossref Metadata Search Response Time
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Sep 1, 2026

No incidents reported today.

Aug 31, 2026

No incidents reported.

Aug 30, 2026

No incidents reported.

Aug 29, 2026

No incidents reported.

Aug 28, 2026

No incidents reported.

Aug 27, 2026

No incidents reported.

Aug 26, 2026

No incidents reported.

Aug 25, 2026
25 August - weekly maintenance, release v0.287.0
Completed - The scheduled maintenance has been completed.
Aug 25, 16:00 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Aug 25, 14:00 UTC
Scheduled - We will be undergoing scheduled maintenance - release version 0.287.0 - on 25 August from 1400 to 1600 UTC. Our members may experience delays in deposit system admin tool (doi.crossref.org) processing. Deposits submitted during this time will be stored and processed after the maintenance has been completed.
Aug 24, 19:06 UTC
Aug 24, 2026
24 August - REST API planned maintenance
Completed - The scheduled maintenance has been completed.
Aug 24, 12:30 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Aug 24, 10:30 UTC
Scheduled - We will be undergoing scheduled REST API maintenance on 24 August from 1030 to 1230 UTC. During this time works in the REST API will be available, but cursors may be affected. This will affect all the REST API pools (Public, polite and plus REST APIs) -EA

Further details regarding the upcoming API updates are available in the community post here: https://community.crossref.org/t/changes-to-cursors-filtering-and-sorting-in-the-rest-api/16246
Aug 21, 09:27 UTC
Aug 23, 2026

No incidents reported.

Aug 22, 2026

No incidents reported.

Aug 21, 2026
Crossref Metadata Search - search.crossref.org - Outage (504 gateway timeout)
Resolved - This incident has been resolved.
Aug 21, 13:30 UTC
Monitoring - A fix has been implemented and we are monitoring the results.
Aug 20, 16:34 UTC
Update - We are continuing to investigate this issue.
Aug 20, 14:15 UTC
Investigating - Crossref Metadata Search has been down and returning a 504 error since approximately 13:00 UTC. We are investigating.
Aug 20, 14:13 UTC
Aug 20, 2026
Aug 19, 2026

No incidents reported.

Aug 18, 2026
18 August - weekly maintenance, release v0.286.1
Completed - The scheduled maintenance has been completed.
Aug 18, 16:00 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Aug 18, 14:00 UTC
Scheduled - We will be undergoing scheduled maintenance - release version 0.286.1 - on 18 August from 1400 to 1600 UTC. Our members may experience delays in deposit system admin tool (doi.crossref.org) processing. Deposits submitted during this time will be stored and processed after the maintenance has been completed.
Aug 17, 15:51 UTC
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