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Censys Outage History

Uptime record, past incidents, and downtime history for Censys.

Checking current status...
60.4% uptime over 91 days
99.9% ✗ 99.5% ✗ 99% ✗ 95% ✗

90-Day Trend

Mar 30Jun 27

Monthly Uptime

Month Uptime Days Tracked Days with Issues
June 2026 25.9% 27 20
May 2026 61.3% 31 12
April 2026 93.3% 30 2
March 2026 33.3% 3 2

Uptime is calculated from daily worst-status snapshots. A day with any non-operational status counts as a day with issues.

Daily Status (Last 91 Days)

Mar 29 Today
Operational Degraded Partial Outage Major Outage Maintenance No Data

Incident History

June 2026
Platform Censys Assistant Unavailable
major

Started: Jun 25, 11:11 AM

identified
We have identified the cause of the issue affecting the in-platform Chat Assistant. The service is currently unavailable due to an upstream AI model availability issue. We are implementing a fix to restore functionality and will provide another update as soon as possible.
Jun 25, 11:11 AM
Risk Instance Generation Delays
major

Started: Jun 12, 2:15 PM

identified
We have identified the root cause of the issue affecting Risk Instance generation. Certain risk types were inadvertently disabled globally, preventing affected Risk Instances from being generated. We are currently implementing a fix and will provide additional updates as remediation progresses.
Jun 12, 2:16 PM
Delays Processing ASM Rescans
major

Started: Jun 8, 6:05 PM

monitoring
We identified an issue causing delays in ASM rescan processing for some customers. To help alleviate the delays, we have increased system capacity and are closely monitoring performance. Rescans may continue to take longer than expected while processing catches up. We will continue to monitor the situation and provide updates as necessary.
Jun 8, 6:05 PM
Delayed ASM Asset Inventory Updates
major

Started: Jun 3, 4:11 PM

monitoring
We are currently experiencing delays in ASM asset updates. The underlying issue has been identified and resolved, and processing has resumed. However, a significant backlog accumulated while the issue was active. As a result, asset updates may continue to be delayed for several hours as we work through the backlog and return processing to normal levels. No data has been lost, and queued updates will be processed automatically. We are actively monitoring recovery progress and will provide ad...
Jun 3, 4:11 PM
May 2026
Authentication Issues
critical

Started: May 30, 1:50 PM

monitoring
Censys Engineering has resolved the issue. Authentication for Censys ASM and Censys Search is now working as expected. Censys Engineering will continue to monitor throughout the day.
May 30, 5:43 PM
identified
Censys Engineering has identified the issue and is working toward resolution.
May 30, 4:25 PM
investigating
Censys Engineering is investigating an issue with authenticating to Censys ASM and Censys Search. Authentication to Censys Platform is working as expected.
May 30, 1:50 PM
Multiple products unable to run searches
critical

Started: May 28, 6:20 AM

monitoring
Censys Engineering has made additional improvements today to increase data ingestion rates, and the backlog continues to clear at an accelerated pace. Search index and Collections data are being actively updated and are approaching normal levels. Censys Engineering will continue to monitor progress and provide a final update once the backlog has been fully cleared and all services have returned to normal.
Jun 1, 8:59 PM
monitoring
Censys Engineering has completed the required infrastructure changes and search functionality is operating normally across Censys Platform and Censys Search. The search index is now being actively updated as we work through the remaining backlog. Data Downloads and Collections will resume updating as the backlog is cleared. Censys Engineering will continue to monitor and provide additional updates as the index fully catches up.
May 30, 5:02 PM
monitoring
Censys Engineering continues to work toward full resolution. Search functionality remains available across Censys Platform and Censys Search, however search index data is not currently being updated at a normal rate, meaning results may not reflect the most recent data. Collections are also not updating during this time. Additionally, Data Downloads will be impacted beginning tomorrow morning. No data will be lost — any snapshots missed will be available in the following build. Censys Engi...
May 29, 9:15 PM
monitoring
Censys Engineering continues to work toward full resolution. While search functionality remains available across Censys Platform and Censys Search, search index data is not currently being updated at a normal rate, meaning results may not reflect the most recent data. Collections are also not updating during this time. Engineering is actively working to complete infrastructure changes required to restore normal indexing capacity and will provide additional updates as they become available.
May 29, 12:56 PM
monitoring
Censys ASM, Censys Search, and Censys Platform are now operational and returning searches at a normal rate as all systems fully recover. Censys Engineering will continue to monitor and make performance tuning adjustments throughout the day.
May 28, 4:09 PM
monitoring
Censys Engineering has resolved the issue. Censys ASM, Censys Search, and Censys Platform are now operational and returning searches at a degraded rate as all systems fully recover. Censys Engineering will continue to monitor and provide additional updates throughout the day.
May 28, 3:40 PM
identified
Censys Engineering has identified the issue and is working toward resolution. Censys ASM, Censys Search, and Censys Platform are slowly starting to return some searches. Censys Engineering will provide additional updates throughout the day.
May 28, 3:24 PM
investigating
Censys ASM, Censys Search, and Censys Platform continue to be unable to run searches. Censys Engineering continues to investigate the issue and narrowing in on the root cause. We will be posting updates throughout the day as we have them.
May 28, 1:45 PM
investigating
Censys ASM, Censys Search, and Censys Platform continue to be unable to run searches. Censys Engineering continues to investigate the issue and attempt to isolate the root cause. We will be posting updates throughout the day as we have them. Direct IP lookups in Censys Platform and Censys Search are continuing to work normally during this outage.
May 28, 12:17 PM
investigating
We are investigating an issue causing queries to fail and collections to be unresponsive.
May 28, 6:20 AM
Documentation Outage
major

Started: May 27, 2:28 PM

monitoring
We are currently experiencing an issue with our public documentation site due to an outage affecting ReadMe, our documentation hosting provider. This issue does not impact product availability, APIs, or platform functionality.
May 27, 2:28 PM
Inventory updates are delayed
major

Started: May 8, 6:14 PM

monitoring
Censys Engineering has mitigated the issue causing Attack Surface Management inventory updates from association and discovery to be delayed. We are monitoring jobs and expect that all inventory updates will land within ~5 hours.
May 8, 7:39 PM
investigating
Censys Engineering has detected an issue that will result in Attack Surface Management inventory updates from association and discovery being delayed. We are actively investigating the underlying cause.
May 8, 6:14 PM
Virtual Hosts Snapshot did not generate for 2026-05-05
major

Started: May 6, 2:36 PM

monitoring
The snapshot upload is continuing. The virtual hosts snapshot should become available to customers overnight.
May 7, 1:49 AM
monitoring
The replacement snapshot for 2026-05-05 has completed and is being uploaded to our cloud storage for customer access. We will update here once the snapshot is available.
May 6, 9:18 PM
identified
Censys Engineering is making forward progress on a mitigation for the underlying cause of the missed snapshot. We hope to be able to begin building the final snapshot within the next few hours.
May 6, 7:02 PM
identified
The underlying cause of the missed snapshot has been identified. The engineering team continues to work toward a resolution.
May 6, 3:48 PM
investigating
The virtual hosts snapshot for 2026-05-05 for Censys Data Downloads customers is delayed. Censys Engineering is investigating. We will update this status page when we have more information on when to expect the snapshot. Other datasets generated as usual for 2026-05-05. Only virtual hosts was affected.
May 6, 2:36 PM
Natural Language Search Query Generation Disruption
major

Started: May 4, 4:42 PM

monitoring
We’ve identified the issue and deployed a fix. Query generation is now functional, though performance is currently slower than expected.
May 4, 7:28 PM
identified
We are currently experiencing an issue where natural language inputs are not being converted into search queries. This affects both the search bar and the Censys Assistant, preventing users from generating queries using plain English. Our team is actively investigating and working to restore functionality.
May 4, 4:42 PM
Data Downloads are Unavailable
major

Started: May 1, 3:51 PM

monitoring
Our upstream provider has identified and mitigated the issue.
May 1, 4:53 PM
investigating
An upstream provider is investigating a Sev. 1 incident. We are in communication with the provider and will continue to provide updates as they become available.
May 1, 4:27 PM
investigating
The Censys Data Downloads product is currently returning HTTP 403 errors for all download requests. Censys Engineering is engaged and investigating.
May 1, 3:51 PM
April 2026
Intermittent errors from Platform and Search
major

Started: Apr 9, 3:28 PM

monitoring
Censys is continuing to monitor for ongoing customer impact, but none has been observed for several hours at this point. We will continue monitoring for the remainder of the day, but at this point our systems are considered operational.
Apr 9, 7:48 PM
identified
Censys Engineering is continuing to remediate degraded behavior in search queries. We're beginning to see backend systems recover, and are continuing to isolate root causes so we can be confident the system remains stable.
Apr 9, 4:54 PM
identified
Censys Engineering has identified an issue that will cause intermittent errors for customers when running searches on Censys Search and Censys Platform. Censys Platform, in particular, will report correctly formed queries as invalid. We've identified unexpected, increased load on backend systems as the cause and are working to remediate the issue.
Apr 9, 3:28 PM
March 2026
Censys Search Application Unreachable
major

Started: Mar 29, 11:16 AM

monitoring
Censys Search is once again available. We are moving to monitoring the service.
Mar 29, 1:43 PM
investigating
The Legacy Search application is currently unreachable. We are investigating.
Mar 29, 11:16 AM
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