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.

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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Jun 26, 2026

No incidents reported today.

Jun 25, 2026

No incidents reported.

Jun 24, 2026
Degraded performance on Public and Polite REST API
Resolved - This incident has been resolved.
Jun 24, 09:43 UTC
Update - We are continuing to monitor our fixes for any further issues affecting the Public and Private REST APIs, Crossmark, content negotiation, and metadata search.
Jun 23, 16:24 UTC
Update - We experienced a couple of downtimes for the Public REST API at 3:09 and 4:15 UTC due to high rates of requests. We are continuing to implement fixes and are monitoring the degraded performance on the Public and REST APIs.
Jun 23, 09:01 UTC
Monitoring - We have deployed and are monitoring a fix for this issue that affected our APIs and Metadata Search.
Jun 22, 11:39 UTC
Update - We are continuing to work on a fix for the performance issue.
Jun 22, 11:22 UTC
Identified - We are receiving a very large number of requests from a user that is applying various strategies to get around our rate limits on our public REST API pool. This is impacting performance, including on the public and polite REST API pools, Crossmark, content negotiation, Crossref Metadata Search and reference matching. We are investigating solutions.
Jun 22, 10:20 UTC
Jun 23, 2026
23 June - weekly maintenance, release version v0.281.0
Completed - The scheduled maintenance has been completed.
Jun 23, 16:00 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Jun 23, 14:00 UTC
Scheduled - We will be undergoing scheduled maintenance - release version 0.281.0 - on 23 June 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.
Jun 22, 15:25 UTC
Jun 22, 2026
Jun 21, 2026

No incidents reported.

Jun 20, 2026

No incidents reported.

Jun 19, 2026

No incidents reported.

Jun 18, 2026

No incidents reported.

Jun 17, 2026

No incidents reported.

Jun 16, 2026
16 June - weekly maintenance, release version v0.280.0
Completed - The scheduled maintenance has been completed.
Jun 16, 16:00 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Jun 16, 14:00 UTC
Scheduled - We will be undergoing scheduled maintenance - release version 0.280.0 - on Tuesday, 16 June 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.
Jun 15, 15:21 UTC
Investigating an outage
Resolved - Participation Reports, the web deposit form, and other small apps and reports have been fully operational again since about 08.30am UTC.
Jun 16, 11:59 UTC
Monitoring - A fix has been implemented. The services are available again and working as expected. We are now monitoring their performance and continuing to investigate the cause of the incident.
Jun 16, 08:41 UTC
Investigating - We are investigating an incident with multiple tools and services including:
- Web deposit form (https://apps.crossref.org/webDeposit)
- Participation Reports (https://crossref.org/members/prep/)
- Browsable title list (https://www.crossref.org/titleList/)
- Other reports and forms under crossref.org

Starting from around 04.16am UTC on 16 June, users attempting to access these tools have been receiving 503 errors.

Our technical team are investigating. We'll provide updates as soon as we know more.
Jun 16, 08:15 UTC
Jun 15, 2026

No incidents reported.

Jun 14, 2026

No incidents reported.

Jun 13, 2026

No incidents reported.

Jun 12, 2026

No incidents reported.

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