Is Ck12.org down? Check current status
CK-12 Foundation provides a library of free online textbooks, videos, exercises, flashcards, and real world applications for over 5000 concepts from arithmetic to history
Ck12.org Reported Problems
Uptime last 24 hours
Response Time last 24 hours
High 630ms, Low 207ms, Avg 323ms
Rate Their Service
Current Status
Up
For 45d 8h 16m
(Jun 04, 2025 10:53:54 PM UTC)
Uptime
100%
Downtime
None recorded
Latest Downtime
Jun 04, 2025 8:57:10 PM UTC
Lasted for 1h 56m 44s
Start your 14-day free trial today
100% free, no credit card required
Get ck12.org downtime alerts
Get downtime notification for free in your inbox when it happens.
To unsubscribe, re-enter your email in the form above and submit.
You have been subscribed to the list.
Your email has been removed from the list.