Continued issues with joining calls from certain ISPs/Regions

What to do

• Check whether you use Daily Core Call Experience. 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 7h 27m it lasted.

  Anything that failed between 2026-06-10 19:20 UTC and 2026-06-11 02:47 UTC may need a replay.

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

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

Updates from Daily 4

1. identifiedJun 10, 2026, 7:20 PM UTC

   We're seeing a recurrence of the problems with RegistryDNS.co and AT&T DNS from Monday. Users trying to join calls from affected regions using ISP DNS may get "Unable to join call" errors. We know specifically that AT&T DNS servers 68.94.157.1 and 68.94.156.1 are affected. We've been working hard on solving this problem since the incident on Monday. We're releasing daily-js 0.91.0 shortly to address this.

   provider

2. identifiedJun 10, 2026, 7:32 PM UTC

   We expect to have daily-js 0.91.0 available within the next 60 to 90 minutes. The update includes automated failover to `dailywebrtc.com` or `dailywebrtc.net` if `daily.co` is unreachable. If you haven't updated daily-js in a while, you can do preliminary testing with 0.90.0 in order to be ready to release an update with 0.91 as soon as it's ready. 0.91 will only contain this feature, as well as a few dependency version updates for security. If you have customers with restrictive networks, they may need to add `*.dailywebrtc.com` and `*.dailywebrtc.net` to their firewall/security allowlists. These domains are relatively new, so they may be flagged by Cisco app firewalls and similar security appliances.

   provider

3. monitoringJun 10, 2026, 10:07 PM UTC

   daily-js 0.91.0 is now available on npm and GitHub. If your app uses call object mode, you can update your dependency to that version and redeploy, and this issue should be resolved for you. We're publishing an update to our networking guide soon, but in the meantime, anything that mentions a `.daily.co` hostname in that doc is also available at `.dailywebrtc.com` and `.dailywebrtc.net`. We'll have updates for embedded Prebuilt and direct link customers soon. We'll leave this incident open while RegistryDNS.co remains offline.

   provider

4. resolvedJun 11, 2026, 2:47 AM UTC

   The RegistryDNS.co servers continue to be intermittently unavailable, but AT&T's DNS servers seem to be more responsive. We encourage you to update to daily-js 0.91.0 as soon as possible to avoid future issues for your users.

   provider

Corrections

None so far.

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