CK-12 Foundation outage history and status
Is CK-12 Foundation down right now?
No
All Systems Operational Official status as of Oct 26, 2026, 16:17 UTC (refreshing…)
Open incidents
100%
uptime, 90 days
0
incidents, 90 days
—
median time to fix
Jun 4, 2025
last incident
CK-12 Foundation outage history
| Started (UTC) | Incident | Impact | Duration |
|---|---|---|---|
| Jun 4, 2025, 23:52 UTC | Site unavailable | No impact | — |
| Apr 9, 2024, 13:30 UTC | Assessment pages (Practice and Quiz) not loading properly | No impact | 3 h 35 min |
| Mar 13, 2024, 16:25 UTC | Assignment Submissions Failing | No impact | 2 h 47 min |
| Feb 21, 2024, 20:29 UTC | Elevated Errors and Slowdown | Major | 1 h 50 min |
| Jan 12, 2023, 17:48 UTC | Investigating an issue with sign in | No impact | 6 h 14 min |
| Sep 14, 2022, 16:05 UTC | Some FlexBooks are not loading correctly | No impact | 13 h 56 min |
| May 31, 2022, 23:43 UTC | Elevated errors when assigning practice | No impact | — |
| Jan 14, 2022, 15:00 UTC | Site Unresponsive Pages not loading | No impact | 3 h 34 min |
| Sep 13, 2021, 18:51 UTC | Slowness and Timeouts | No impact | 6 h 18 min |
| Aug 24, 2021, 17:22 UTC | Timeouts and Slowdown | No impact | 2 h 37 min |
| Aug 24, 2021, 17:20 UTC | Timeouts and Slowdown | No impact | — |
| Mar 31, 2021, 13:17 UTC | Course copy assignments not loading | No impact | 7 days 21 h |
| Feb 3, 2021, 16:54 UTC | Practice Service Interruption | No impact | — |
| Oct 22, 2020, 15:38 UTC | Performance Degradation | No impact | — |
| Oct 22, 2020, 06:26 UTC | FlexBook 2.0 not loading in Safari | No impact | 3 h 23 min |
| Oct 9, 2020, 05:07 UTC | Assignment creation failing | No impact | 10 h 53 min |
| Oct 9, 2020, 05:05 UTC | Group creation failures | No impact | — |
| Sep 14, 2020, 16:14 UTC | Site slow down | No impact | — |
| Sep 3, 2020, 16:45 UTC | Elevated Practice/Quiz Errors and slowdown | No impact | 6 h 29 min |
| Aug 25, 2020, 21:18 UTC | Unexpected Maintenance Page | No impact | — |
| Aug 24, 2020, 09:00 UTC | Elevated Practice/Quiz Errors | No impact | <1 min |
| Aug 18, 2020, 23:11 UTC | Search Queries Failing / Slow | No impact | <1 min |
| Jun 10, 2020, 15:38 UTC | Elevated Practice/Quiz Errors | Major | — |
| Mar 30, 2020, 19:15 UTC | Performance Degradation | No impact | — |
| Jan 7, 2019, 20:09 UTC | This is an example incident | No impact | 10 min |
25 incidents in our archive since January 7, 2019.
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FAQ
- Is CK-12 Foundation down right now?
- At our last check CK-12 Foundation's official status page reported: All Systems Operational. This page refreshes the status every few minutes.
- How often does CK-12 Foundation go down?
- CK-12 Foundation reported 0 incidents in the last 90 days (0 major or critical), with 0 minutes of major outage: 100% uptime.
- When was the last CK-12 Foundation outage?
- The latest reported incident started on Jun 4, 2025, 23:52 UTC: "Site unavailable", resolved after —.
Source: CK-12 Foundation official status page · RSS of CK-12 Foundation incidents · status badge for your site