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Resolved

Improving DNS Reliability for Sandboxes

Oct 4, 2026 at 8:00am UTC  –  Oct 4, 2026 at 9:00am UTC
Affected services
Containers
Host Connectivity
Private Images
VMs
SSL certificates

Resolved
Oct 4, 2026 at 9:00am UTC

Maintenance ended

Created
Oct 4, 2026 at 8:00am UTC

We are changing the DNS service used by sandbox hosts to a new internal solution that is better suited to our reliability requirements and the scale of sandbox provisioning and cleanup.

On Sunday, October 4, between 08:00 and 09:00 UTC, we will migrate DNS resolution to the new internal DNS service, which is responsible for the participants.internal domain.

No action is required for your tracks, sandbox configurations, or lifecycle scripts. Sandboxes created after the migration will automatically use the new DNS service for communication, and we do not expect any downtime during the migration.

Thank you for your patience and understanding as we continue working to make the service more reliable.