test.crossref.org is currently down
Update - We are continuing to monitor for any further issues.
Oct 04, 2026 - 13:18 UTC
Monitoring - The test server ran out of memory and stopped responding; we restarted it, and it's working again. If you had problems depositing or querying in the test system during this time, please try again. We'll monitor.
-GH
Oct 04, 2026 - 13:18 UTC
Investigating - The test admin system has been down since about 09:30 UTC, so members will see a 503 Service Unavailable message when visiting test.crossref.org. We're investigating.
-GH
Oct 04, 2026 - 11:30 UTC
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 Degraded Performance
Admin tool Operational
Test admin tool Degraded Performance
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
Handle servers Operational
Monitoring of iThenticate can be seen at https://turnitin.statuspage.io. Operational
AWS cloudfront Operational
ORCID Auto-update Operational
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.

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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Oct 4, 2026

Unresolved incident: test.crossref.org is currently down.

Oct 3, 2026

No incidents reported.

Oct 2, 2026

No incidents reported.

Oct 1, 2026

No incidents reported.

Sep 30, 2026

No incidents reported.

Sep 29, 2026

29 September - weekly maintenance, release v0.292.0
Completed - The scheduled maintenance has been completed.
Sep 29, 15:23 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Sep 29, 14:00 UTC
Scheduled - We will be undergoing scheduled maintenance - release version 0.292.0 - on 29 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.
Sep 28, 14:12 UTC

Sep 28, 2026

No incidents reported.

Sep 27, 2026

Test admin tool - test.crossref.org - is down
Resolved - This incident has been resolved.
Sep 27, 01:45 UTC
Monitoring - A fix has been implemented and we are monitoring the results.
Sep 27, 01:38 UTC
Investigating - Our test admin tool is down at the moment. Members are receiving a 503 service unavailable message when trying to access test.crossref.org. -IF
Sep 27, 01:22 UTC

Sep 26, 2026

No incidents reported.

Sep 25, 2026

No incidents reported.

Sep 24, 2026

www.crossref.org was down for 70 mins on Sunday, 13 September; we're monitoring for the coming weeks
Resolved - This incident has been resolved.
Sep 24, 13:22 UTC
Update - We are continuing to monitor for any further issues.
Sep 21, 22:12 UTC
Update - We have deployed a fix for this issue and are monitoring the results. -IF
Sep 15, 17:01 UTC
Monitoring - Yesterday, 13 September, we reported an incident with our website: www.crossref.org. It was down from 11:13 to 12:23 UTC. We resolved that incident prematurely. The outage was caused by a know intermittent issue that our technical team is working to resolve, but does not yet have fixed. We're monitoring the issue, and anticipate doing so for the foreseeable future. Thus, we have re-opened a new incident here. We'll provide updates as we have them. -IF
Sep 14, 23:19 UTC

Sep 23, 2026

No incidents reported.

Sep 22, 2026

22 September - weekly maintenance, release v0.291.0
Completed - The scheduled maintenance has been completed.
Sep 22, 15:56 UTC
Update - Scheduled maintenance is still in progress. We will provide updates as necessary.
Sep 22, 15:56 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Sep 22, 14:00 UTC
Scheduled - We will be undergoing scheduled maintenance - release version 0.291.0 - on 22 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.
Sep 21, 15:18 UTC

Sep 21, 2026

Errors logging in to the test admin tool - test.crossref.org
Resolved - This incident has been resolved. Members can now log in to our test admin tool - test.crossref.org - as normal.
Between approximately 21:30 UTC on 20 September and 08:30 UTC on 21 September, members attempting to log in saw the error "Error connecting to the authentication service." Our technical team restored the service and confirmed that login is working again.
Sep 21, 09:18 UTC
Investigating - Members attempting to access the test admin tool - test.crossref.org - are experiencing the following error: 'Error connecting to the authentication service. Please try again later or contact support.' Our technical team is investigating the issue.
Sep 21, 02:57 UTC

Sep 20, 2026

No incidents reported.

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