Update - Scheduled maintenance is still in progress. We will provide updates as necessary.
Jul 09, 2025 - 02:56 UTC
Jul 09, 2025 - 02:56 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Jul 08, 2025 - 21:00 UTC
Jul 08, 2025 - 21:00 UTC
Update - We will be undergoing scheduled maintenance during this time.
Jul 8, 2025 21:00 - Jul 9, 2025 21:00 UTC
Jul 8, 2025 21:00 - Jul 9, 2025 21:00 UTC
Scheduled - We will be undergoing an extended scheduled maintenance window of up to 24 hours, from 21:00 UTC 8 July 2025 to 21:00 UTC 9 July 2025. We will be migrating the final part of our system to cloud infrastructure. The migration will require complete downtime, during which all Crossref services will be unavailable (with the exception of our REST API, which will remain up), and attempts to access these services, including making a metadata deposit, will receive a 500 error message; you will need to retry when services are back online. This downtime will not affect the resolution of Crossref DOI links, which will continue to work. We apologise for any disruption as we migrate our system to a new infrastructure.
What will change?
When our services come back online, the timezone will have shifted to UTC (from US ET). This mainly impacts the timestamps reported back to you when metadata deposits are received, started, and finished processing. This change will not impact the timestamps in the REST API, which are already reported in UTC.
Our IP address will no longer remain static, but will change. If you are using our IP address to connect to our services, this will no longer work.
We currently allow connections using HTTP/1.0 protocol, but after the maintenance, we will require HTTP/1.1. Likewise, we currently allow TLS version 1.1, but after the migration, we will require at least version 1.2. Older ciphers will not work. A list of accepted ciphers can be found on this page (https://docs.aws.amazon.com/elasticloadbalancing/latest/application/describe-ssl-policies.html#tls-security-policies) for “ELBSecurityPolicy-TLS13-1-2-2021-06”.
Thanks for your patience and understanding; this will be a significant milestone in modernising the Crossref system.
Jul 8, 2025 21:00 - Jul 9, 2025 21:00 UTC
What will change?
When our services come back online, the timezone will have shifted to UTC (from US ET). This mainly impacts the timestamps reported back to you when metadata deposits are received, started, and finished processing. This change will not impact the timestamps in the REST API, which are already reported in UTC.
Our IP address will no longer remain static, but will change. If you are using our IP address to connect to our services, this will no longer work.
We currently allow connections using HTTP/1.0 protocol, but after the maintenance, we will require HTTP/1.1. Likewise, we currently allow TLS version 1.1, but after the migration, we will require at least version 1.2. Older ciphers will not work. A list of accepted ciphers can be found on this page (https://docs.aws.amazon.com/elasticloadbalancing/latest/application/describe-ssl-policies.html#tls-security-policies) for “ELBSecurityPolicy-TLS13-1-2-2021-06”.
Thanks for your patience and understanding; this will be a significant milestone in modernising the Crossref system.
Jul 8, 2025 21:00 - Jul 9, 2025 21:00 UTC
APIs
Under Maintenance
Public REST API
?
Operational
Polite REST API
?
Operational
OAI-PMH
?
Under Maintenance
XML API
?
Under Maintenance
Event Data Query API
?
Under Maintenance
OpenURL
?
Under Maintenance
Crossmark dialog server
?
Under Maintenance
Public content negotiation
?
Under Maintenance
Polite content negotiation
?
Under Maintenance
Metadata Plus
Under Maintenance
Plus REST API
?
Operational
Plus OAI-PMH
?
Under Maintenance
XML Snapshots
?
Under Maintenance
JSON Snapshots
?
Under Maintenance
Plus content negotiation
?
Under Maintenance
Key Manager
?
Under Maintenance
Content Registration
Under Maintenance
Admin tool
?
Under Maintenance
Test admin tool
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Under Maintenance
Web deposit form
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Under Maintenance
Record registration form
?
Under Maintenance
Metadata files
Under Maintenance
Open Funder Registry
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Under Maintenance
Retraction Watch
?
Under Maintenance
Annual public data files
?
Under Maintenance
Sites
Under Maintenance
Crossref website
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Operational
Crossref support
?
Operational
Metadata search
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Under Maintenance
Participation reports
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Under Maintenance
Integrations and external dependencies
Under Maintenance
Handle servers
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Under Maintenance
Monitoring of iThenticate can be seen at https://turnitin.statuspage.io.
Under Maintenance
AWS cloudfront
Under Maintenance
ORCID Auto-update
?
Under Maintenance
Meta
Under Maintenance
deliberately-unreliable server
?
Under Maintenance
Demo Auth
?
Under Maintenance
Beta
Under Maintenance
Metadata Manager
?
Under Maintenance
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.