checked Sep 10, 2026 5:23 PM UTC · Substack Custom domains's official status page
Is Substack Custom domains Down Right Now?
No. Substack Custom domains is up and running.
Substack Custom domains is currently operational with all systems functioning normally.
Service health
The record
90 day period · not affected by the range aboveAvailability counts operational or degraded time as available for this component alone. Partial outages count as half downtime and major outages count in full, scheduled maintenance is excluded from the calculation, and periods with no recorded status are counted as available rather than assumed down. Figures cover this component only — the service-wide record is on the Custom domains service page.
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