Outage in Illustrative Mathematics

Cloudflare blocking users on illustrativemathematics.org and illustrativemathematics.blog intermittently

Resolved Minor

October 27, 2025 - Started 4 months ago - Lasted about 16 hours
Official incident page

Incident Report

We are currently investigating this issue.

Components affected

Illustrative Mathematics IM Website (uptime monitoring) Illustrative Mathematics IM Blog (uptime monitoring)

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Latest Updates ( sorted recent to last )

RESOLVED 4 months ago - at 10/28/2025 02:14PM

Resolved: last night, the web hosting company for illustrativemathematics.org and illustrativemathematics.blog resolved an issue with their security feature that was preventing users from accessing those websites.

INVESTIGATING 4 months ago - at 10/27/2025 10:39PM

Update: the issue lies with a 3rd party service and we are awaiting for their teams to address the issue. Engineering is monitoring status updates and will notify the organization once we have more information.

INVESTIGATING 4 months ago - at 10/27/2025 10:21PM

We are aware the users are experiencing intermittent issues accessing the site due to a CloudFlare block warning. We are investigating and recommend that users re-try the site if they receive the error or clear their cache if the issues persists for them.

INVESTIGATING 4 months ago - at 10/27/2025 10:20PM

We are currently investigating this issue.

Latest Illustrative Mathematics outages

PostHog feature flag api errors impacting on accessim.org - 4 months ago

Degraded Performance on AccessIM - 10 months ago

Illustrativemathematics.org and Illustrativemathematics.blog have major outages. - almost 2 years ago

Kendall Hunt instance down - about 3 years ago

DNS issue - over 3 years ago

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