Connection failures for organizations restricting GitHub access by IP address

What to do

• Check whether you use Anthropic claude.ai, Claude Code. Check your stack

  Paste a package.json, lockfile, Terraform or a list of domains at down.guide/stack to see every provider you depend on.

• Confirm your retries, queues and scheduled jobs caught up after the 18h 4m it lasted.

  Anything that failed between 2026-05-06 22:32 UTC and 2026-05-07 16:36 UTC may need a replay.

• Subscribe to Anthropic's feed to hear about the next one first. RSS feed

  https://down.guide/feed?provider=anthropic works in Slack (/feed subscribe), Discord feed bots and any RSS reader.

Updates from Anthropic 3

1. identifiedMay 6, 2026, 10:32 PM UTC

   We have identified an issue affecting organizations that restrict GitHub access by source IP address. A recent infrastructure change altered the IP addresses Anthropic uses for outbound connections to GitHub, which may cause Claude Code remote sessions, GitHub Enterprise plugin syncing, and Claude Security to fail. We are reverting the change to restore the previous IP ranges; no allowlist changes will be needed on your side. We will post an update once the fix is deployed.

   provider

2. monitoringMay 7, 2026, 3:17 PM UTC

   A fix has been implemented and we are monitoring the results.

   provider

3. resolvedMay 7, 2026, 4:36 PM UTC

   This incident has been resolved.

   provider

Corrections

None so far.

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